What is the main function of epithelial tissue in the human body?
Solution
Correct Answer: Option A
- The main function of epithelial tissue in the human body is primarily to provide protection and facilitate secretion.
- Epithelial tissue forms the lining of body surfaces and cavities, acting as a barrier that protects underlying structures from physical damage, pathogens, and dehydration.
- Additionally, it plays a crucial role in the secretion of various substances such as enzymes, hormones, and sweat through specialized cells.
- Unlike other tissues, epithelial cells are tightly packed with minimal extracellular matrix, which helps in creating an effective protective layer.
- They also have a high regenerative capacity, allowing continuous renewal and repair. Some epithelial cells are involved in absorption and filtration, but their main recognized functions are protection and secretion.
The other options refer to functions of different tissues:
- Option 2: Conduction of electrical impulses is related to nervous tissue.
- Option 3: Support and movement pertains to muscle and connective tissues.
- Option 4: Storage of energy is mainly a function of adipose tissue, a type of connective tissue.
Understanding these fundamental roles helps in grasping the organization and specialization of tissues in the human body.
Reference: "Human Anatomy & Physiology," 10th Edition, Chapter 4: Tissue Level of Organization, Page 123
- Epithelial tissue forms the lining of body surfaces and cavities, acting as a barrier that protects underlying structures from physical damage, pathogens, and dehydration.
- Additionally, it plays a crucial role in the secretion of various substances such as enzymes, hormones, and sweat through specialized cells.
- Unlike other tissues, epithelial cells are tightly packed with minimal extracellular matrix, which helps in creating an effective protective layer.
- They also have a high regenerative capacity, allowing continuous renewal and repair. Some epithelial cells are involved in absorption and filtration, but their main recognized functions are protection and secretion.
The other options refer to functions of different tissues:
- Option 2: Conduction of electrical impulses is related to nervous tissue.
- Option 3: Support and movement pertains to muscle and connective tissues.
- Option 4: Storage of energy is mainly a function of adipose tissue, a type of connective tissue.
Understanding these fundamental roles helps in grasping the organization and specialization of tissues in the human body.
Reference: "Human Anatomy & Physiology," 10th Edition, Chapter 4: Tissue Level of Organization, Page 123
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