Here below some basic MCQ’s of “Locomotion and Movement” with answer which is explained in details. Let’s check one by one which is given below.
MCQ 1
Which type of muscle is responsible for voluntary movement in the body?
A) Smooth
B) Cardiac
C) Skeletal
D) Involuntary
Answer: C) Skeletal
Explanation: Skeletal muscles are under voluntary control, allowing for conscious movement, such as walking or lifting objects.
MCQ 2
What is the primary function of the sarcomere in muscle contraction?
A) Store calcium
B) Generate action potentials
C) Contract and relax
D) Produce energy
Answer: C) Contract and relax
Explanation: Sarcomeres are the basic contractile units of muscle fibers, where the sliding filament mechanism occurs, allowing muscles to contract and relax.
MCQ 3
Which structure acts as a lever in the human body during movement?
A) Muscle
B) Joint
C) Bone
D) All of the above
Answer: D) All of the above
Explanation: Muscles pull on bones (levers) at joints to create movement; thus, all these structures contribute to locomotion.
MCQ 4
Which of the following best describes the role of tendons?
A) Connect muscle to muscle
B) Connect muscle to bone
C) Provide blood supply to muscles
D) Store energy for muscle contraction
Answer: B) Connect muscle to bone
Explanation: Tendons are fibrous connective tissues that attach muscles to bones, enabling the transfer of force during movement.
MCQ 5
What type of joint allows for the widest range of motion?
A) Hinge joint
B) Ball-and-socket joint
C) Pivot joint
D) Saddle joint
Answer: B) Ball-and-socket joint
Explanation: Ball-and-socket joints, such as the shoulder and hip joints, allow for rotational and multidirectional movement.
MCQ 6
Which of the following is NOT a type of locomotion?
A) Walking
B) Swimming
C) Jumping
D) Breathing
Answer: D) Breathing
Explanation: Breathing is a vital process for respiration, not a mode of locomotion, which involves moving from one place to another.
MCQ 7
What is the role of calcium ions in muscle contraction?
A) They energize muscle fibers.
B) They facilitate the binding of actin and myosin.
C) They increase muscle temperature.
D) They prevent muscle fatigue.
Answer: B) They facilitate the binding of actin and myosin.
Explanation: Calcium ions bind to troponin, causing a conformational change that allows myosin to bind to actin, initiating contraction.
MCQ 8
Which protein is primarily responsible for muscle contraction?
A) Actin
B) Myosin
C) Troponin
D) Tropomyosin
Answer: B) Myosin
Explanation: Myosin is the thick filament in muscle fibers that interacts with actin to generate force during contraction.
MCQ 9
What type of locomotion do earthworms primarily use?
A) Swimming
B) Walking
C) Slithering
D) Peristalsis
Answer: D) Peristalsis
Explanation: Earthworms use peristaltic movements, contracting and relaxing their muscles in waves to move through soil.
MCQ 10
What is the primary energy source for muscle contraction?
A) Fatty acids
B) Glucose
C) ATP
D) Proteins
Answer: C) ATP
Explanation: Adenosine triphosphate (ATP) provides the energy required for muscle contraction and relaxation.
MCQ 11
Which type of muscle tissue is involuntary and found in the walls of hollow organs?
A) Skeletal
B) Cardiac
C) Smooth
D) Epithelial
Answer: C) Smooth
Explanation: Smooth muscle is involuntary and located in the walls of hollow organs, such as the intestines and blood vessels.
MCQ 12
What connects bone to bone at a joint?
A) Tendon
B) Ligament
C) Cartilage
D) Synovial fluid
Answer: B) Ligament
Explanation: Ligaments are strong, flexible tissues that connect bones to other bones at joints.
MCQ 13
Which structure in the muscle fiber stores calcium ions?
A) Sarcolemma
B) Myofibril
C) Sarcoplasmic reticulum
D) Mitochondria
Answer: C) Sarcoplasmic reticulum
Explanation: The sarcoplasmic reticulum is an organelle that stores calcium ions, which are essential for muscle contraction.
MCQ 14
Which of the following movements decreases the angle between body parts?
A) Extension
B) Flexion
C) Abduction
D) Adduction
Answer: B) Flexion
Explanation: Flexion is the movement that reduces the angle between two body parts, such as bending the elbow.
MCQ 15
Which joint is primarily responsible for the rotation of the head?
A) Hinge joint
B) Ball-and-socket joint
C) Pivot joint
D) Gliding joint
Answer: C) Pivot joint
Explanation: Pivot joints allow for rotational movement, such as the joint between the first and second cervical vertebrae that enables head rotation.
MCQ 16
What is the main purpose of the skeletal system in locomotion?
A) Protection of organs
B) Storage of minerals
C) Movement and support
D) Blood cell production
Answer: C) Movement and support
Explanation: The skeletal system provides a framework that supports the body and facilitates movement through the attachment of muscles.
MCQ 17
What is the term for the rhythmic contraction and relaxation of muscles?
A) Peristalsis
B) Tetanus
C) Isotonic
D) Synergism
Answer: A) Peristalsis
Explanation: Peristalsis refers to the wave-like muscle contractions that move food through the digestive tract.
MCQ 18
Which muscle type is responsible for the heartbeat?
A) Smooth
B) Skeletal
C) Cardiac
D) Voluntary
Answer: C) Cardiac
Explanation: Cardiac muscle is specialized for continuous contraction and is responsible for pumping blood throughout the body.
MCQ 19
What kind of lever system is used when a person performs a bicep curl?
A) First-class lever
B) Second-class lever
C) Third-class lever
D) None of the above
Answer: C) Third-class lever
Explanation: In a third-class lever, the effort is applied between the load and the fulcrum, as in a bicep curl where the elbow acts as the fulcrum.
MCQ 20
What is the basic unit of contraction in muscle fibers?
A) Myofibril
B) Sarcomere
C) Muscle fiber
D) Fascicle
Answer: B) Sarcomere
Explanation: The sarcomere is the smallest unit of muscle contraction, defined by the region between two Z lines.
MCQ 21
Which type of joint allows for sliding movements?
A) Hinge joint
B) Ball-and-socket joint
C) Gliding joint
D) Pivot joint
Answer: C) Gliding joint
Explanation: Gliding joints allow for limited sliding movements between flat or slightly curved surfaces, such as in the wrists and ankles.
MCQ 22
Which protein forms the thin filament in muscle fibers?
A) Myosin
B) Actin
C) Troponin
D) Titin
Answer: B) Actin
Explanation: Actin is the primary protein that makes up the thin filaments in muscle fibers and plays a key role in contraction.
MCQ 23
What is the primary function of synovial fluid?
A) Store nutrients
B) Lubricate joints
C) Transmit signals
D) Protect organs
Answer: B) Lubricate joints
Explanation: Synovial fluid reduces friction between the articular cartilage of synovial joints during movement.
MCQ 24
Which of the following structures protects the ends of bones at a joint?
A) Tendon
B) Ligament
C) Cartilage
D) Synovium
Answer: C) Cartilage
Explanation: Cartilage provides a smooth surface for joint movement and absorbs shock, protecting the ends of bones.
MCQ 25
What is the primary role of myoglobin in muscle cells?
A) Store calcium
B) Store oxygen
C) Produce ATP
D) Facilitate movement
Answer: B) Store oxygen
Explanation: Myoglobin is a protein in muscle cells that binds oxygen, facilitating its storage and use during muscle contraction.
MCQ 26
Which type of joint allows for angular movements?
A) Hinge joint
B) Ball-and-socket joint
C) Both A and B
D) None of the above
Answer: C) Both A and B
Explanation: Both hinge joints (like the elbow) and ball-and-socket joints (like the shoulder) allow for various types of angular movements.
MCQ 27
Which condition results from prolonged muscle contraction?
A) Muscle strain
B) Muscle atrophy
C) Muscle fatigue
D) Muscle hypertrophy
Answer: C) Muscle fatigue
Explanation: Muscle fatigue occurs when a muscle is overworked, leading to a decrease in its ability to contract effectively.
MCQ 28
What type of muscle contraction occurs without changing muscle length?
A) Isometric
B) Isotonic
C) Eccentric
D) Concentric
Answer: A) Isometric
Explanation: Isometric contraction involves muscle tension without changing its length, such as holding a weight in place.
MCQ 29
What type of movement occurs when you lift your arms sideways?
A) Flexion
B) Extension
C) Abduction
D) Adduction
Answer: C) Abduction
Explanation: Abduction refers to moving a limb away from the midline of the body, such as raising arms sideways.
MCQ 30
Which of the following is a characteristic of skeletal muscle?
A) Involuntary control
B) Striated appearance
C) Single nucleus
D) Spindle-shaped fibers
Answer: B) Striated appearance
Explanation: Skeletal muscle is characterized by a striated appearance due to the organized arrangement of actin and myosin filaments.
MCQ 31
What is the function of the Achilles tendon?
A) Connects knee to thigh
B) Connects calf muscle to heel
C) Supports the spine
D) Connects fingers to hand
Answer: B) Connects calf muscle to heel
Explanation: The Achilles tendon connects the calf muscles to the heel bone, playing a key role in walking and running.
MCQ 32
Which movement is opposite to flexion?
A) Extension
B) Abduction
C) Rotation
D) Circumduction
Answer: A) Extension
Explanation: Extension increases the angle between body parts, serving as the opposite movement to flexion.
MCQ 33
What type of energy is primarily used during short bursts of high-intensity exercise?
A) Aerobic
B) Anaerobic
C) Lactic
D) Glycolytic
Answer: B) Anaerobic
Explanation: Anaerobic energy production occurs during short, intense activities and does not require oxygen, leading to lactic acid production.
MCQ 34
Which part of the neuron is responsible for transmitting signals away from the cell body?
A) Dendrite
B) Axon
C) Soma
D) Synapse
Answer: B) Axon
Explanation: The axon is the part of the neuron that conducts electrical impulses away from the cell body to other neurons or muscles.
MCQ 35
Which type of muscle contraction involves lengthening of the muscle?
A) Isometric
B) Concentric
C) Eccentric
D) Isotonic
Answer: C) Eccentric
Explanation: Eccentric contraction occurs when a muscle lengthens while under tension, often seen when lowering a weight.
MCQ 36
What is the primary role of the neuromuscular junction?
A) Connects muscles to bones
B) Transmits signals from nerves to muscles
C) Stores calcium ions
D) Provides blood supply to muscles
Answer: B) Transmits signals from nerves to muscles
Explanation: The neuromuscular junction is the synapse where a motor neuron communicates with a muscle fiber, triggering contraction.
MCQ 37
Which muscle group is primarily responsible for the upward motion of a pull-up?
A) Quadriceps
B) Biceps
C) Pectorals
D) Triceps
Answer: B) Biceps
Explanation: The biceps brachii is primarily responsible for flexing the elbow and pulling the body upward during a pull-up.
MCQ 38
What is the term for the movement of a limb toward the body’s midline?
A) Abduction
B) Adduction
C) Flexion
D) Extension
Answer: B) Adduction
Explanation: Adduction is the movement of a limb or body part toward the midline of the body.
MCQ 39
What is the primary function of cartilage in joints?
A) Store nutrients
B) Reduce friction
C) Produce synovial fluid
D) Connect muscles to bones
Answer: B) Reduce friction
Explanation: Cartilage provides a smooth surface for joint movement and absorbs shock, reducing friction between bones.
MCQ 40
Which muscle type is involuntary and striated?
A) Skeletal
B) Smooth
C) Cardiac
D) Epithelial
Answer: C) Cardiac
Explanation: Cardiac muscle is striated like skeletal muscle but is involuntary, controlling heart contractions.
MCQ 41
Which part of the brain is primarily involved in coordinating movement?
A) Cerebrum
B) Cerebellum
C) Brainstem
D) Thalamus
Answer: B) Cerebellum
Explanation: The cerebellum coordinates voluntary movements and maintains posture and balance.
MCQ 42
What is the primary effect of muscle hypertrophy?
A) Increase in muscle length
B) Increase in muscle strength
C) Decrease in muscle size
D) Increase in fat storage
Answer: B) Increase in muscle strength
Explanation: Muscle hypertrophy refers to the increase in the size of muscle fibers, which generally leads to increased strength.
MCQ 43
What is the main role of the respiratory system during intense exercise?
A) Provide energy
B) Remove waste
C) Supply oxygen
D) All of the above
Answer: C) Supply oxygen
Explanation: The primary function of the respiratory system during exercise is to supply oxygen to the bloodstream for energy production.
MCQ 44
Which movement involves rotating a body part around its axis?
A) Flexion
B) Rotation
C) Abduction
D) Extension
Answer: B) Rotation
Explanation: Rotation refers to the circular movement of a body part around an axis, like turning the head side to side.
MCQ 45
Which muscle is primarily responsible for extending the knee?
A) Hamstrings
B) Quadriceps
C) Gastrocnemius
D) Gluteus maximus
Answer: B) Quadriceps
Explanation: The quadriceps group extends the knee, playing a key role in activities like standing and running.
MCQ 46
What is the role of the bursa in joints?
A) Produce synovial fluid
B) Reduce friction
C) Store nutrients
D) Connect bone to bone
Answer: B) Reduce friction
Explanation: Bursae are small fluid-filled sacs that reduce friction between bones and soft tissues in joints.
MCQ 47
Which of the following is an example of an isotonic contraction?
A) Holding a weight still
B) Lifting a weight
C) Stretching a rubber band
D) Pushing against a wall
Answer: B) Lifting a weight
Explanation: Isotonic contractions involve a change in muscle length while producing movement, such as lifting or lowering weights.
MCQ 48
What is the role of the neuromuscular system?
A) Provide energy
B) Control movement
C) Store calcium
D) Supply oxygen
Answer: B) Control movement
Explanation: The neuromuscular system coordinates the activity of muscles and nerves to enable movement.
MCQ 49
Which of the following muscles is responsible for inhalation?
A) Diaphragm
B) Intercostal muscles
C) Abdominals
D) A and B
Answer: D) A and B
Explanation: Both the diaphragm and intercostal muscles contract to expand the thoracic cavity, facilitating inhalation.
MCQ 50
What is the primary source of energy during aerobic exercise?
A) Creatine phosphate
B) Glucose
C) Fatty acids
D) Protein
Answer: C) Fatty acids
Explanation: During aerobic exercise, the body primarily uses fatty acids and glucose for energy production in the presence of oxygen.
MCQ 51
What is the primary function of the skeletal muscle?
A) Produce hormones
B) Generate heat
C) Protect internal organs
D) All of the above
Answer: B) Generate heat
Explanation: Skeletal muscles generate heat through contraction, helping maintain body temperature.
MCQ 52
Which muscle is primarily responsible for plantarflexion of the foot?
A) Tibialis anterior
B) Gastrocnemius
C) Soleus
D) B and C
Answer: D) B and C
Explanation: Both the gastrocnemius and soleus muscles contribute to plantarflexion, pointing the toes downward.
MCQ 53
What type of exercise primarily promotes cardiovascular fitness?
A) Strength training
B) Flexibility exercises
C) Aerobic exercises
D) Balance training
Answer: C) Aerobic exercises
Explanation: Aerobic exercises, such as running or swimming, improve cardiovascular endurance by increasing heart and lung efficiency.
MCQ 54
What is the primary role of ATP in muscle contraction?
A) Store calcium
B) Supply energy
C) Transport oxygen
D) Release neurotransmitters
Answer: B) Supply energy
Explanation: ATP provides the necessary energy for muscle contraction, enabling myosin to pull on actin filaments.
MCQ 55
What movement occurs when a person raises their shoulder towards their ears?
A) Abduction
B) Elevation
C) Depression
D) Rotation
Answer: B) Elevation
Explanation: Elevation involves moving a body part superiorly, such as raising the shoulders.
MCQ 56
What is the primary function of the flexor muscles?
A) Extend joints
B) Flex joints
C) Rotate joints
D) Stabilize joints
Answer: B) Flex joints
Explanation: Flexor muscles are responsible for decreasing the angle at joints, such as bending the elbow or knee.
MCQ 57
Which of the following is a feature of slow-twitch muscle fibers?
A) Fast contraction speed
B) High fatigue resistance
C) Low oxygen supply
D) Large diameter
Answer: B) High fatigue resistance
Explanation: Slow-twitch fibers are designed for endurance activities, as they resist fatigue and rely on aerobic metabolism.
MCQ 58
What type of joint allows for rotational movement in the neck?
A) Hinge joint
B) Ball-and-socket joint
C) Pivot joint
D) Ellipsoidal joint
Answer: C) Pivot joint
Explanation: Pivot joints permit rotational movement, such as the atlas and axis vertebrae in the neck.
MCQ 59
Which structure serves as the attachment point for muscles to bones?
A) Ligament
B) Tendon
C) Cartilage
D) Synovial membrane
Answer: B) Tendon
Explanation: Tendons connect muscles to bones, enabling movement by transmitting the force generated by muscles.
MCQ 60
What term describes a muscle’s ability to stretch and return to its original length?
A) Elasticity
B) Contractility
C) Extensibility
D) Excitability
Answer: A) Elasticity
Explanation: Elasticity is the ability of a muscle to return to its original length after being stretched.
MCQ 61
Which of the following actions primarily involves the hamstring muscles?
A) Kicking a ball
B) Running
C) Bending the knee
D) Both B and C
Answer: D) Both B and C
Explanation: The hamstrings are responsible for knee flexion and play a crucial role in running and kicking actions.
MCQ 62
Which of the following is NOT a function of skeletal muscles?
A) Maintaining posture
B) Producing movement
C) Hormonal secretion
D) Generating heat
Answer: C) Hormonal secretion
Explanation: Skeletal muscles do not produce hormones; their functions include movement, posture, and heat generation.
MCQ 63
What is the role of the central nervous system in movement?
A) Generate energy
B) Process sensory information
C) Control muscle contractions
D) Both B and C
Answer: D) Both B and C
Explanation: The central nervous system processes sensory input and controls muscle contractions to coordinate movement.
MCQ 64
What type of muscle fibers are best for explosive movements like sprinting?
A) Slow-twitch
B) Fast-twitch
C) Intermediate
D) Cardiac
Answer: B) Fast-twitch
Explanation: Fast-twitch fibers contract quickly and powerfully, making them ideal for short bursts of intense activity like sprinting.
MCQ 65
What is the primary function of the intercostal muscles?
A) Support the spine
B) Aid in breathing
C) Stabilize the pelvis
D) Flex the elbow
Answer: B) Aid in breathing
Explanation: Intercostal muscles help expand and contract the rib cage during inhalation and exhalation.
MCQ 66
Which type of muscle contraction occurs when the muscle shortens while producing force?
A) Eccentric
B) Isometric
C) Concentric
D) Isokinetic
Answer: C) Concentric
Explanation: Concentric contraction occurs when a muscle shortens while generating force, such as lifting a weight.
MCQ 67
What is the purpose of warm-up exercises?
A) Increase flexibility
B) Reduce injury risk
C) Improve performance
D) All of the above
Answer: D) All of the above
Explanation: Warm-up exercises increase blood flow, improve flexibility, and reduce the risk of injury while enhancing performance.
MCQ 68
Which type of joint permits the greatest range of motion?
A) Hinge joint
B) Pivot joint
C) Ball-and-socket joint
D) Saddle joint
Answer: C) Ball-and-socket joint
Explanation: Ball-and-socket joints allow for movement in multiple directions, providing a wide range of motion.
MCQ 69
What is the primary role of the deltoid muscle?
A) Flex the elbow
B) Rotate the shoulder
C) Abduct the arm
D) Extend the wrist
Answer: C) Abduct the arm
Explanation: The deltoid muscle is primarily responsible for the abduction of the arm at the shoulder joint.
MCQ 70
Which muscle is commonly known as the “calf muscle”?
A) Tibialis anterior
B) Soleus
C) Gastrocnemius
D) Quadriceps
Answer: C) Gastrocnemius
Explanation: The gastrocnemius is the large muscle in the calf that helps with walking, running, and jumping.
MCQ 71
What type of joint is found at the elbow?
A) Hinge joint
B) Ball-and-socket joint
C) Pivot joint
D) Gliding joint
Answer: A) Hinge joint
Explanation: The elbow is a hinge joint, allowing movement primarily in one direction (flexion and extension).
MCQ 72
Which muscle group is primarily engaged when performing squats?
A) Quadriceps
B) Hamstrings
C) Gluteals
D) All of the above
Answer: D) All of the above
Explanation: Squats engage multiple muscle groups, including the quadriceps, hamstrings, and gluteals, for lower body strength.
MCQ 73
What is the main function of the biceps brachii muscle?
A) Extend the elbow
B) Flex the shoulder
C) Flex the elbow
D) Rotate the shoulder
Answer: C) Flex the elbow
Explanation: The biceps brachii primarily functions to flex the elbow and assist with shoulder flexion.
MCQ 74
What is the main function of the diaphragm during respiration?
A) Contract to increase thoracic volume
B) Relax to decrease thoracic volume
C) Filter air
D) Produce mucus
Answer: A) Contract to increase thoracic volume
Explanation: The diaphragm contracts to increase the volume of the thoracic cavity, allowing air to flow into the lungs during inhalation.
MCQ 75
What type of muscle contraction is used to maintain posture?
A) Eccentric
B) Isometric
C) Isotonic
D) Concentric
Answer: B) Isometric
Explanation: Isometric contractions maintain muscle tension without changing muscle length, which is crucial for maintaining posture.
MCQ 76
Which part of the body has the highest concentration of fast-twitch muscle fibers?
A) Arms
B) Legs
C) Back
D) Abdomen
Answer: B) Legs
Explanation: The legs generally have a higher concentration of fast-twitch muscle fibers, enabling explosive movements like sprinting and jumping.
MCQ 77
What type of exercise is primarily anaerobic?
A) Marathon running
B) Weightlifting
C) Swimming
D) Cycling
Answer: B) Weightlifting
Explanation: Weightlifting primarily relies on anaerobic energy systems for short bursts of high-intensity effort.
MCQ 78
What term describes the process of muscle fibers contracting in response to a nerve impulse?
A) Contraction
B) Innervation
C) Recruitment
D) Extension
Answer: B) Innervation
Explanation: Innervation refers to the supply of nerves to a muscle, allowing it to contract in response to neural signals.
MCQ 79
Which joint movement decreases the angle between two body parts?
A) Extension
B) Flexion
C) Abduction
D) Adduction
Answer: B) Flexion
Explanation: Flexion reduces the angle between two body parts, such as bending the knee or elbow.
MCQ 80
What is the primary energy source for muscle contraction during prolonged aerobic exercise?
A) Creatine phosphate
B) Glucose
C) Fatty acids
D) Lactate
Answer: C) Fatty acids
Explanation: Fatty acids are the primary fuel source during prolonged aerobic exercise, providing sustained energy.
MCQ 81
What is the role of the sarcoplasm in muscle fibers?
A) Store calcium ions
B) Provide energy
C) Store glycogen and myoglobin
D) Transmit nerve impulses
Answer: C) Store glycogen and myoglobin
Explanation: Sarcoplasm contains glycogen and myoglobin, which provide energy and oxygen for muscle contraction.
MCQ 82
Which of the following is an example of a gliding joint?
A) Shoulder
B) Wrist
C) Elbow
D) Hip
Answer: B) Wrist
Explanation: The wrist contains gliding joints that allow limited movement between the small carpal bones.
MCQ 83
What is the main function of the trapezius muscle?
A) Rotate the shoulder
B) Elevate the shoulders
C) Flex the neck
D) Extend the elbow
Answer: B) Elevate the shoulders
Explanation: The trapezius muscle is responsible for shoulder elevation and assists in various shoulder and neck movements.
MCQ 84
Which type of muscle fibers are more resistant to fatigue?
A) Fast-twitch fibers
B) Slow-twitch fibers
C) Intermediate fibers
D) None of the above
Answer: B) Slow-twitch fibers
Explanation: Slow-twitch fibers are designed for endurance activities and resist fatigue better than fast-twitch fibers.
MCQ 85
What is the primary role of the rotator cuff?
A) Stabilize the shoulder
B) Flex the elbow
C) Extend the knee
D) Rotate the wrist
Answer: A) Stabilize the shoulder
Explanation: The rotator cuff consists of muscles and tendons that stabilize the shoulder joint during movement.
MCQ 86
Which of the following muscles is responsible for flexing the hip?
A) Gluteus maximus
B) Iliopsoas
C) Quadriceps
D) Hamstrings
Answer: B) Iliopsoas
Explanation: The iliopsoas muscle is the primary hip flexor, responsible for raising the knee toward the body.
MCQ 87
What is the function of the flexor carpi muscles?
A) Flex the fingers
B) Flex the wrist
C) Extend the elbow
D) Rotate the forearm
Answer: B) Flex the wrist
Explanation: The flexor carpi muscles are responsible for flexing the wrist, enabling movements like gripping.
MCQ 88
Which muscle is primarily responsible for extending the shoulder?
A) Pectoralis major
B) Latissimus dorsi
C) Deltoid
D) Supraspinatus
Answer: B) Latissimus dorsi
Explanation: The latissimus dorsi extends the shoulder joint, playing a key role in movements like pulling.
MCQ 89
What is the primary action of the serratus anterior muscle?
A) Abduct the arm
B) Rotate the scapula
C) Flex the elbow
D) Stabilize the spine
Answer: B) Rotate the scapula
Explanation: The serratus anterior muscle is responsible for protracting and rotating the scapula, important for shoulder movements.
MCQ 90
What is the main function of the gluteus maximus?
A) Flex the hip
B) Extend the hip
C) Rotate the hip
D) Abduct the hip
Answer: B) Extend the hip
MCQ 91
What is the primary function of the adductor muscles?
A) Abduct the thigh
B) Flex the knee
C) Adduct the thigh
D) Extend the hip
Answer: C) Adduct the thigh
Explanation: The adductor muscles are responsible for bringing the thighs together, decreasing the angle between them.
MCQ 92
Which of the following structures prevents excessive movement at a joint?
A) Tendon
B) Ligament
C) Bursa
D) Cartilage
Answer: B) Ligament
Explanation: Ligaments connect bones at joints and help stabilize them by preventing excessive movement.
MCQ 93
What type of muscle contraction occurs when a muscle lengthens while under tension?
A) Concentric
B) Eccentric
C) Isometric
D) Isokinetic
Answer: B) Eccentric
Explanation: Eccentric contractions occur when a muscle lengthens while still generating force, such as when lowering a weight.
MCQ 94
Which muscle is primarily responsible for the movement of the jaw during chewing?
A) Masseter
B) Temporalis
C) Buccinator
D) A and B
Answer: D) A and B
Explanation: Both the masseter and temporalis muscles are crucial for closing the jaw and facilitating chewing.
MCQ 95
What type of joint is the knee classified as?
A) Hinge joint
B) Ball-and-socket joint
C) Pivot joint
D) Saddle joint
Answer: A) Hinge joint
Explanation: The knee is a hinge joint, primarily allowing flexion and extension movements.
MCQ 96
Which muscle assists in rotating the trunk?
A) Rectus abdominis
B) External oblique
C) Transverse abdominis
D) Erector spinae
Answer: B) External oblique
Explanation: The external oblique muscles are responsible for trunk rotation and lateral flexion.
MCQ 97
What is the role of myoglobin in muscle tissue?
A) Store calcium ions
B) Transport oxygen
C) Provide energy
D) Stimulate contraction
Answer: B) Transport oxygen
Explanation: Myoglobin is a protein in muscle tissue that binds oxygen, facilitating its storage and transport for muscle metabolism.
MCQ 98
Which of the following is NOT a function of the skeletal system?
A) Protect vital organs
B) Produce hormones
C) Store minerals
D) Facilitate movement
Answer: B) Produce hormones
Explanation: While bones can influence hormone regulation, they do not primarily produce hormones; their main functions include protection, mineral storage, and movement facilitation.
MCQ 99
What movement is described as moving a limb away from the midline of the body?
A) Abduction
B) Adduction
C) Flexion
D) Extension
Answer: A) Abduction
Explanation: Abduction refers to moving a limb away from the body’s midline, such as raising an arm to the side.
MCQ 100
Which of the following muscles is involved in knee flexion?
A) Quadriceps
B) Hamstrings
C) Gluteus maximus
D) Soleus
Answer: B) Hamstrings
Explanation: The hamstring muscles are responsible for flexing the knee joint during movements like running and squatting.
MCQ 101
What type of muscle contraction occurs without changing muscle length?
A) Isometric
B) Eccentric
C) Concentric
D) Isokinetic
Answer: A) Isometric
Explanation: Isometric contractions maintain tension in the muscle without changing its length, such as holding a weight steady.
MCQ 102
What is the main action of the rectus abdominis muscle?
A) Flex the trunk
B) Rotate the trunk
C) Extend the trunk
D) Abduct the trunk
Answer: A) Flex the trunk
Explanation: The rectus abdominis muscle primarily functions to flex the trunk, as seen in movements like sit-ups.
MCQ 103
Which muscle group is primarily responsible for shoulder flexion?
A) Pectoralis major
B) Deltoids
C) Trapezius
D) A and B
Answer: D) A and B
Explanation: Both the pectoralis major and deltoids play key roles in flexing the shoulder joint.
MCQ 104
What is the primary function of the sternocleidomastoid muscle?
A) Flex the neck
B) Rotate the head
C) Extend the neck
D) A and B
Answer: D) A and B
Explanation: The sternocleidomastoid muscle flexes and rotates the neck, enabling movements like turning the head.
MCQ 105
Which of the following best describes the role of proprioceptors?
A) Control muscle contractions
B) Detect changes in joint position
C) Generate muscle energy
D) Facilitate blood flow
Answer: B) Detect changes in joint position
Explanation: Proprioceptors provide the central nervous system with information about body position and movement, helping maintain balance and coordination.
MCQ 106
What is the primary role of the latissimus dorsi muscle?
A) Adduct the arm
B) Flex the arm
C) Extend the arm
D) Rotate the arm
Answer: C) Extend the arm
Explanation: The latissimus dorsi muscle is primarily responsible for extending the arm, particularly during activities like pulling.
MCQ 107
Which muscle is responsible for elevating the rib cage during inspiration?
A) Diaphragm
B) Pectoralis major
C) Serratus anterior
D) Intercostal muscles
Answer: D) Intercostal muscles
Explanation: The intercostal muscles elevate the rib cage during inhalation, expanding the thoracic cavity.
MCQ 108
What type of joint is found between the first metacarpal and the trapezium bone of the wrist?
A) Hinge joint
B) Ball-and-socket joint
C) Saddle joint
D) Pivot joint
Answer: C) Saddle joint
Explanation: The carpometacarpal joint of the thumb is a saddle joint, allowing for a wide range of motion, including opposition.
MCQ 109
Which muscle is known as the “core” muscle group?
A) Rectus abdominis
B) Transverse abdominis
C) Multifidus
D) All of the above
Answer: D) All of the above
Explanation: The core includes multiple muscles such as the rectus abdominis, transverse abdominis, and multifidus, all contributing to trunk stability.
MCQ 110
What is the role of the flexor digitorum muscles?
A) Extend the fingers
B) Flex the fingers
C) Rotate the wrist
D) Abduct the fingers
Answer: B) Flex the fingers
Explanation: The flexor digitorum muscles are responsible for flexing the fingers, allowing for gripping and grasping actions.
MCQ 111
What is the primary function of the gluteus medius muscle?
A) Extend the hip
B) Abduct the hip
C) Flex the knee
D) Rotate the hip
Answer: B) Abduct the hip
Explanation: The gluteus medius muscle primarily functions to abduct the hip, stabilizing the pelvis during walking and running.
MCQ 112
Which muscle assists in the downward movement of the arm?
A) Pectoralis major
B) Biceps brachii
C) Triceps brachii
D) Deltoid
Answer: C) Triceps brachii
Explanation: The triceps brachii is responsible for extending the elbow and assisting in the downward movement of the arm.
MCQ 113
What is the role of the diaphragm during exhalation?
A) Contract
B) Relax
C) Stretch
D) Stabilize
Answer: B) Relax
Explanation: During exhalation, the diaphragm relaxes, reducing the thoracic cavity volume and pushing air out of the lungs.
MCQ 114
Which structure connects muscle to bone?
A) Ligament
B) Tendon
C) Cartilage
D) Synovial fluid
Answer: B) Tendon
Explanation: Tendons are connective tissues that attach muscles to bones, allowing for movement.
MCQ 115
What type of muscle tissue is found in the heart?
A) Skeletal
B) Smooth
C) Cardiac
D) Epithelial
Answer: C) Cardiac
Explanation: Cardiac muscle tissue is specialized for the heart, enabling rhythmic contractions to pump blood.
MCQ 116
Which of the following is NOT a characteristic of skeletal muscle?
A) Voluntary control
B) Striated appearance
C) Involuntary contraction
D) Multinucleated cells
Answer: C) Involuntary contraction
Explanation: Skeletal muscle is under voluntary control, allowing for conscious movement.
MCQ 117
What is the main action of the vastus lateralis muscle?
A) Flex the knee
B) Extend the knee
C) Rotate the hip
D) Abduct the thigh
Answer: B) Extend the knee
Explanation: The vastus lateralis is part of the quadriceps group and primarily functions to extend the knee joint.
MCQ 118
Which muscle is responsible for extending the forearm at the elbow?
A) Biceps brachii
B) Triceps brachii
C) Brachialis
D) Deltoid
Answer: B) Triceps brachii
Explanation: The triceps brachii is the primary muscle responsible for extending the forearm at the elbow joint.
MCQ 119
What is the primary action of the iliopsoas muscle?
A) Extend the knee
B) Flex the hip
C) Adduct the thigh
D) Rotate the pelvis
Answer: B) Flex the hip
Explanation: The iliopsoas muscle is the main hip flexor, crucial for movements like raising the knee.
MCQ 120
Which muscle is responsible for the movement of the shoulder blade?
A) Rhomboid
B) Pectoralis major
C) Trapezius
D) A and C
Answer: D) A and C
Explanation: Both the rhomboid and trapezius muscles are involved in moving and stabilizing the shoulder blade.
MCQ 121
What is the main function of the orbicularis oris muscle?
A) Close the eyes
B) Pucker the lips
C) Elevate the eyebrows
D) Move the cheeks
Answer: B) Pucker the lips
Explanation: The orbicularis oris muscle encircles the mouth and is primarily responsible for puckering the lips.
MCQ 122
Which muscle assists in the movement of the neck?
A) Rectus abdominis
B) Sternocleidomastoid
C) Latissimus dorsi
D) Trapezius
Answer: B) Sternocleidomastoid
Explanation: The sternocleidomastoid muscle flexes and rotates the neck, playing a key role in head movement.
MCQ 123
What is the primary function of the erector spinae muscles?
A) Flex the spine
B) Rotate the spine
C) Extend the spine
D) Stabilize the pelvis
Answer: C) Extend the spine
Explanation: The erector spinae muscles are responsible for extending and stabilizing the spine during various movements.
MCQ 124
Which of the following muscles is involved in plantar flexion of the foot?
A) Tibialis anterior
B) Gastrocnemius
C) Soleus
D) B and C
Answer: D) B and C
Explanation: Both the gastrocnemius and soleus muscles are responsible for plantar flexion, which allows the foot to point downward.
MCQ 125
What is the primary action of the flexor hallucis longus muscle?
A) Flex the big toe
B) Extend the big toe
C) Dorsiflex the foot
D) Evert the foot
Answer: A) Flex the big toe
Explanation: The flexor hallucis longus muscle is primarily responsible for flexing the big toe, assisting with movements like walking.
MCQ 126
Which muscle is primarily responsible for the movement of the tongue?
A) Styloglossus
B) Hyoglossus
C) Genioglossus
D) All of the above
Answer: D) All of the above
Explanation: All of these muscles contribute to the movement and positioning of the tongue.
MCQ 127
What is the primary action of the extensor digitorum muscle?
A) Flex the fingers
B) Extend the fingers
C) Abduct the fingers
D) Rotate the wrist
Answer: B) Extend the fingers
Explanation: The extensor digitorum muscle is responsible for extending the fingers at the knuckles.
MCQ 128
Which muscle assists in rotating the thigh laterally?
A) Gluteus maximus
B) Iliopsoas
C) Adductor longus
D) Sartorius
Answer: A) Gluteus maximus
Explanation: The gluteus maximus is involved in laterally rotating the thigh and extending the hip.
MCQ 129
What is the role of the biceps brachii during a pull-up?
A) Stabilize the shoulder
B) Extend the elbow
C) Flex the elbow
D) Rotate the shoulder
Answer: C) Flex the elbow
Explanation: During a pull-up, the biceps brachii flexes the elbow to pull the body upward.
MCQ 130
What is the primary action of the pectoralis major muscle?
A) Adduct the arm
B) Extend the arm
C) Flex the arm
D) A and C
Answer: D) A and C
Explanation: The pectoralis major is involved in both flexing and adducting the arm at the shoulder joint.
MCQ 131
Which joint allows for rotation of the head?
A) Hinge joint
B) Pivot joint
C) Ball-and-socket joint
D) Gliding joint
Answer: B) Pivot joint
Explanation: The joint between the first and second cervical vertebrae (atlantoaxial joint) is a pivot joint that allows head rotation.
MCQ 132
What is the main action of the sartorius muscle?
A) Flex the knee
B) Flex the hip
C) Abduct the thigh
D) All of the above
Answer: D) All of the above
Explanation: The sartorius muscle flexes the hip and knee while also assisting in thigh abduction.
MCQ 133
What is the function of the gastrocnemius during running?
A) Dorsiflex the foot
B) Plantar flex the foot
C) Flex the knee
D) A and C
Answer: B) Plantar flex the foot
Explanation: The gastrocnemius primarily plantar flexes the foot during running and jumping.
MCQ 134
Which muscle is the primary extensor of the hip?
A) Rectus femoris
B) Gluteus maximus
C) Iliopsoas
D) Hamstrings
Answer: B) Gluteus maximus
Explanation: The gluteus maximus is the main muscle responsible for hip extension during activities like climbing and standing.
MCQ 135
What is the role of the pectoralis minor?
A) Stabilize the shoulder
B) Adduct the arm
C) Protract the scapula
D) Flex the elbow
Answer: C) Protract the scapula
Explanation: The pectoralis minor muscle helps protract and stabilize the scapula during shoulder movements.
MCQ 136
Which of the following muscles is involved in external rotation of the shoulder?
A) Infraspinatus
B) Subscapularis
C) Supraspinatus
D) Teres major
Answer: A) Infraspinatus
Explanation: The infraspinatus muscle is primarily responsible for externally rotating the shoulder.
MCQ 137
What is the primary function of the rectus femoris muscle?
A) Flex the hip
B) Extend the knee
C) A and B
D) Abduct the thigh
Answer: C) A and B
Explanation: The rectus femoris both flexes the hip and extends the knee, making it a key muscle in leg movements.
MCQ 138
Which muscle is primarily responsible for inversion of the foot?
A) Tibialis anterior
B) Gastrocnemius
C) Peroneus longus
D) Soleus
Answer: A) Tibialis anterior
Explanation: The tibialis anterior muscle is responsible for dorsiflexion and inversion of the foot.
MCQ 139
What type of joint is found in the ankle?
A) Hinge joint
B) Ball-and-socket joint
C) Pivot joint
D) Saddle joint
Answer: A) Hinge joint
Explanation: The ankle joint is primarily a hinge joint, allowing for dorsiflexion and plantar flexion.
MCQ 140
What is the role of the teres major muscle?
A) Adduct the arm
B) Rotate the arm
C) Extend the arm
D) All of the above
Answer: D) All of the above
Explanation: The teres major muscle is involved in adducting, extending, and medially rotating the arm.
MCQ 141
Which muscle group is primarily responsible for hip abduction?
A) Adductors
B) Gluteus medius and minimus
C) Hamstrings
D) Quadriceps
Answer: B) Gluteus medius and minimus
Explanation: The gluteus medius and minimus are the main muscles responsible for abducting the hip.
MCQ 142
What is the primary action of the flexor carpi radialis muscle?
A) Flex the wrist
B) Extend the wrist
C) Abduct the wrist
D) Rotate the forearm
Answer: A) Flex the wrist
Explanation: The flexor carpi radialis muscle primarily functions to flex the wrist and assist in radial deviation.
MCQ 143
Which muscle is responsible for opening the mouth?
A) Masseter
B) Temporalis
C) Digastric
D) Buccinator
Answer: C) Digastric
Explanation: The digastric muscle helps depress the mandible, allowing for mouth opening.
MCQ 144
What is the role of the vastus intermedius muscle?
A) Flex the knee
B) Extend the knee
C) Rotate the hip
D) Stabilize the knee
Answer: B) Extend the knee
Explanation: The vastus intermedius is part of the quadriceps group and primarily functions to extend the knee joint.
MCQ 145
What is the primary function of the levator scapulae muscle?
A) Elevate the scapula
B) Depress the scapula
C) Rotate the scapula
D) Adduct the scapula
Answer: A) Elevate the scapula
Explanation: The levator scapulae muscle is responsible for elevating the scapula and assisting in neck movement.
MCQ 146
Which of the following muscles aids in chewing?
A) Temporalis
B) Masseter
C) Buccinator
D) All of the above
Answer: D) All of the above
Explanation: The temporalis, masseter, and buccinator muscles all assist in the chewing process.
MCQ 147
What is the primary role of the external intercostal muscles?
A) Aid in exhalation
B) Aid in inhalation
C) Stabilize the rib cage
D) Flex the torso
Answer: B) Aid in inhalation
Explanation: The external intercostal muscles help elevate the rib cage during inhalation, increasing lung volume.
MCQ 148
Which muscle is responsible for shoulder extension?
A) Pectoralis major
B) Deltoid
C) Latissimus dorsi
D) A and C
Answer: D) A and C
Explanation: Both the pectoralis major and latissimus dorsi are involved in extending the shoulder joint.
MCQ 149
What is the primary function of the soleus muscle?
A) Plantar flex the foot
B) Dorsiflex the foot
C) Flex the knee
D) Abduct the foot
Answer: A) Plantar flex the foot
Explanation: The soleus muscle primarily plantar flexes the foot, working alongside the gastrocnemius.
MCQ 150
Which muscle is involved in both flexing the hip and extending the knee?
A) Rectus femoris
B) Biceps femoris
C) Semitendinosus
D) Sartorius
Answer: A) Rectus femoris
Explanation: The rectus femoris is unique among the quadriceps as it flexes the hip while also extending the knee.
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