- Which of the following connective tissues connects muscles to bones?
a) Ligament
b) Tendon
c) Cartilage
d) Fascia
Answer: b) Tendon
Explanation: Tendons are connective tissues that attach muscles to bones, allowing for the transfer of force needed to move the skeleton during contraction.
- Which type of epithelial tissue lines the urinary bladder and allows it to stretch?
a) Simple cuboidal epithelium
b) Transitional epithelium
c) Stratified squamous epithelium
d) Pseudostratified epithelium
Answer: b) Transitional epithelium
Explanation: Transitional epithelium is specialized to stretch and recoil. It lines the urinary bladder, enabling it to expand as it fills with urine and contract as it empties.
- What is the primary function of ciliated epithelium in the respiratory tract?
a) Secretion
b) Absorption
c) Filtration
d) Movement of mucus
Answer: d) Movement of mucus
Explanation: Ciliated epithelium in the respiratory tract contains hair-like projections (cilia) that move in a coordinated manner to propel mucus, trapping dust and other particles, out of the airways.
- Which one of the following is NOT a part of connective tissue?
a) Chondrocytes
b) Fibroblasts
c) Osteocytes
d) Neurons
Answer: d) Neurons
Explanation: Neurons are part of the nervous tissue, not connective tissue. Chondrocytes, fibroblasts, and osteocytes are cells found in different types of connective tissues.
- Which of the following is a type of exocrine gland?
a) Pituitary gland
b) Adrenal gland
c) Sweat gland
d) Thyroid gland
Answer: c) Sweat gland
Explanation: Exocrine glands secrete their products into ducts. Sweat glands, salivary glands, and sebaceous glands are examples of exocrine glands. The other glands mentioned are endocrine glands that release hormones directly into the bloodstream.
- Which of the following types of cartilage provides flexibility and is found in the external ear?
a) Hyaline cartilage
b) Fibrocartilage
c) Elastic cartilage
d) Calcified cartilage
Answer: c) Elastic cartilage
Explanation: Elastic cartilage is found in the external ear (pinna) and the epiglottis. It contains a high density of elastic fibers, providing both strength and flexibility.
- Which connective tissue cells are responsible for producing fibers like collagen and elastin?
a) Mast cells
b) Fibroblasts
c) Chondrocytes
d) Macrophages
Answer: b) Fibroblasts
Explanation: Fibroblasts are the most common cells in connective tissue and are responsible for synthesizing and maintaining the extracellular matrix, including fibers like collagen and elastin.
- Which of the following is an example of an involuntary muscle?
a) Biceps
b) Triceps
c) Cardiac muscle
d) Deltoid muscle
Answer: c) Cardiac muscle
Explanation: Cardiac muscle is involuntary, meaning it contracts without conscious control. It is found only in the heart. The other options refer to skeletal muscles, which are voluntary.
- Where would you typically find stratified squamous epithelium in the human body?
a) Lining of the stomach
b) Alveoli of the lungs
c) Skin surface
d) Walls of capillaries
Answer: c) Skin surface
Explanation: Stratified squamous epithelium consists of multiple layers of cells and is found in areas subject to abrasion, such as the outer layer of the skin (epidermis), esophagus, and mouth.
- Which type of muscle tissue is characterized by a lack of striations and the presence of spindle-shaped cells?
a) Cardiac muscle
b) Smooth muscle
c) Skeletal muscle
d) Both cardiac and skeletal muscle
Answer: b) Smooth muscle
Explanation: Smooth muscle lacks striations and consists of spindle-shaped cells. It is found in the walls of internal organs, such as the stomach and intestines, and functions involuntarily.
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