- Which connective tissue cell is responsible for the storage of fat?
a) Osteocytes
b) Chondrocytes
c) Adipocytes
d) Macrophages
Answer: c) Adipocytes
Explanation: Adipocytes are specialized connective tissue cells responsible for storing fat in the form of triglycerides, providing insulation and energy storage.
- Which type of epithelial tissue is best suited for diffusion and filtration?
a) Simple squamous epithelium
b) Stratified squamous epithelium
c) Simple cuboidal epithelium
d) Transitional epithelium
Answer: a) Simple squamous epithelium
Explanation: Simple squamous epithelium consists of a single layer of flat cells, making it ideal for diffusion and filtration processes, such as in the lungs and kidneys.
- The structural and functional unit of a nerve is the:
a) Axon
b) Neuron
c) Dendrite
d) Glial cell
Answer: b) Neuron
Explanation: Neurons are the structural and functional units of the nervous system, responsible for transmitting electrical and chemical signals throughout the body.
- Which type of connective tissue serves as a reservoir for water and salts?
a) Dense connective tissue
b) Areolar tissue
c) Adipose tissue
d) Bone
Answer: b) Areolar tissue
Explanation: Areolar tissue is a loose connective tissue that serves as a reservoir for water and salts. It cushions and protects organs and holds them in place.
- In which type of epithelium do cells change shape depending on the stretch of the tissue?
a) Simple columnar epithelium
b) Stratified squamous epithelium
c) Transitional epithelium
d) Simple cuboidal epithelium
Answer: c) Transitional epithelium
Explanation: Transitional epithelium is found in areas such as the bladder and allows the tissue to stretch when filled with urine and contract when emptied, with cells changing shape accordingly.
- The type of muscle that contracts under involuntary control in the digestive tract is:
a) Skeletal muscle
b) Smooth muscle
c) Cardiac muscle
d) Both smooth and skeletal muscle
Answer: b) Smooth muscle
Explanation: Smooth muscle is found in the walls of internal organs, such as the digestive tract, where it contracts involuntarily to move food through peristalsis.
- The protein responsible for the hardness of nails and hair is:
a) Collagen
b) Elastin
c) Actin
d) Keratin
Answer: d) Keratin
Explanation: Keratin is a tough, fibrous protein that provides strength and protection to structures like nails, hair, and the outer layer of the skin.
- Which of the following tissues is the main site of fat storage in the human body?
a) Reticular tissue
b) Cartilage
c) Adipose tissue
d) Bone
Answer: c) Adipose tissue
Explanation: Adipose tissue is the primary site for fat storage in the body, providing insulation, energy reserves, and cushioning for organs.
- Which type of connective tissue is primarily responsible for supporting and anchoring epithelial tissues?
a) Dense regular connective tissue
b) Areolar tissue
c) Cartilage
d) Bone
Answer: b) Areolar tissue
Explanation: Areolar tissue is a type of loose connective tissue that provides support and anchorage to epithelial tissues, helping to bind skin and muscles together.
- The type of cartilage found at the ends of long bones and in the nose is:
a) Elastic cartilage
b) Hyaline cartilage
c) Fibrocartilage
d) Reticular cartilage
Answer: b) Hyaline cartilage
Explanation: Hyaline cartilage is the most common type of cartilage in the body, found at the ends of long bones in joints, as well as in the nose and trachea. It provides smooth surfaces for joint movement and structural support.
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