GENERAL HISTOLOGY

EPITHELIUM

EPITHELIAL TISSUES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is NOT a characteristic of epithelial tissue?
A
No free surfaces or edges
B
Avascular
C
Form continuous sheets
D
Regenerate easily if nourished
Explanation: 

Detailed explanation-1: -Final answer: Basement membrane is absent in epithelial tissue cells is not a characteristic of epithelial tissue. (b) The lining of blood vessels, lung alveoli and kidney tubules are all made up of epithelial tissue.

Detailed explanation-2: -The main characteristic of epithelial tissues is cells can be subjected to rapid division. Epithelial tissue is abundant all over the body. They form the covering of all surfaces of the body, line cavities of the body, and hollow organs and are the main tissue in glands.

Detailed explanation-3: -All epithelial tissues share the following common and important characteristics: Free surface: Epithelial tissue always has an apical surface or a free edge. Arranged into sheets or layers: All epithelial tissue is composed of a sheet of cells one or more layers thick.

Detailed explanation-4: -Epithelial cells have a free surface called the apical surface. We often think of this part of the epithelial cell as the top of the cell, however, the free surface can face any direction so long as it is facing the external environment, such as the opening of a cavity or the surface of the skin.

Detailed explanation-5: -They form sheets of tightly bound cells or roll into tubes. Epithelial cells lie on the basement membrane. Epithelial cells have two different “sides”-apical and basolateral. The apical side always faces out of the body (outside or into a lumen). More items

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