Which tissue type forms the outer layer of the body surfaces and lines organs?

Which tissue type forms the outer layer of the body surfaces and lines organs?

• A. Epithelial
• B. Connective
• C. Muscle
• D. Nervous

Answer: (A)

Epithelial tissue forms coverings and linings of body surfaces and organs, providing protection as well as roles in absorption, secretion, and filtration. The skin’s outer layer, the epidermis, is made of epithelial cells, and epithelial tissue lines hollow organs and cavities, all organized as continuous sheets with an exposed apical surface and a basement membrane anchoring to underlying tissues. This sets it apart from connective tissue (which supports and connects), muscle tissue (which contracts to move), and nervous tissue (which transmits signals).

Epithelial tissue forms coverings and linings of body surfaces and organs, providing protection as well as roles in absorption, secretion, and filtration. The skin’s outer layer, the epidermis, is made of epithelial cells, and epithelial tissue lines hollow organs and cavities, all organized as continuous sheets with an exposed apical surface and a basement membrane anchoring to underlying tissues. This sets it apart from connective tissue (which supports and connects), muscle tissue (which contracts to move), and nervous tissue (which transmits signals).