- The tissue that helps in the movement of the heart is:
a) Smooth muscle
b) Skeletal muscle
c) Cardiac muscle
d) Connective tissue
Answer: c) Cardiac muscle
Explanation: Cardiac muscle is responsible for the involuntary movement of the heart. It is striated like skeletal muscle but operates involuntarily like smooth muscle.
- Which of the following is a characteristic feature of connective tissue?
a) Tightly packed cells
b) Presence of a large amount of extracellular matrix
c) Lack of blood supply
d) No regenerative capacity
Answer: b) Presence of a large amount of extracellular matrix
Explanation: Connective tissue is characterized by the presence of a large amount of extracellular matrix, which includes fibers and ground substances. This matrix provides support, structure, and protection.
- The type of epithelium that lines the small intestine and is specialized for absorption is:
a) Simple squamous epithelium
b) Stratified squamous epithelium
c) Simple columnar epithelium
d) Pseudostratified epithelium
Answer: c) Simple columnar epithelium
Explanation: Simple columnar epithelium, often with microvilli, lines the small intestine and plays a crucial role in the absorption of nutrients during digestion.
- The connective tissue that forms the framework of soft organs such as the liver and lymph nodes is:
a) Dense connective tissue
b) Reticular connective tissue
c) Elastic connective tissue
d) Adipose tissue
Answer: b) Reticular connective tissue
Explanation: Reticular connective tissue forms a supportive mesh in soft organs like the liver, spleen, and lymph nodes, providing structural support for these organs.
- Which of the following tissues does NOT have the ability to regenerate well?
a) Bone tissue
b) Cartilage
c) Epithelial tissue
d) Blood
Answer: b) Cartilage
Explanation: Cartilage has limited regenerative capacity because it lacks a direct blood supply, which slows the healing process compared to tissues like bone or epithelium.
- Which of the following structures is made up of dense regular connective tissue?
a) Blood vessels
b) Tendons
c) Dermis of the skin
d) Lymph nodes
Answer: b) Tendons
Explanation: Tendons are made up of dense regular connective tissue, characterized by collagen fibers arranged in parallel bundles, providing great tensile strength to withstand the force of muscle contractions.
- Which type of cartilage is the most abundant in the human body?
a) Elastic cartilage
b) Hyaline cartilage
c) Fibrocartilage
d) Calcified cartilage
Answer: b) Hyaline cartilage
Explanation: Hyaline cartilage is the most abundant type of cartilage in the body. It is found in places like the nose, trachea, and ends of long bones, providing support and cushioning.
- Which type of epithelial tissue appears to be multilayered but is actually a single layer of cells?
a) Simple cuboidal epithelium
b) Stratified squamous epithelium
c) Pseudostratified columnar epithelium
d) Transitional epithelium
Answer: c) Pseudostratified columnar epithelium
Explanation: Pseudostratified columnar epithelium appears to have multiple layers due to the varying positions of nuclei but is actually a single layer where all cells touch the basement membrane.
- Which cells are involved in the formation of bone?
a) Osteoblasts
b) Osteoclasts
c) Chondroblasts
d) Fibroblasts
Answer: a) Osteoblasts
Explanation: Osteoblasts are the cells responsible for synthesizing and secreting the components of the bone matrix, which leads to bone formation.
- The outer layer of the skin is composed of:
a) Simple cuboidal epithelium
b) Stratified squamous epithelium
c) Simple squamous epithelium
d) Pseudostratified columnar epithelium
Answer: b) Stratified squamous epithelium
Explanation: The epidermis, or the outermost layer of the skin, is composed of stratified squamous epithelium, which is well-suited to protect the body from abrasion and infection.
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