Question
Assertion

The columnar epithelium lining the intestinal mucosa appears to have a brush like an appearance.

Reason

A large number of microvilli are present on brush bordered columnar epithelium.

The columnar epithelium lining the intestinal mucosa appears to have a brush like an appearance.

A

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

B

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

C

Assertion is correct but Reason is incorrect

D

Both Assertion and Reason are incorrect

Medium
Solution
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Correct option is A)

Columnar epithelium is a type of simple epithelium characterised by the presence of tall column-like cells. Its major function is absorption or secretion. It covers the inner surface of the intestine, stomach and gall biadder. In the intestine, it appears to have a brush like appearance on the free surface, which is due to the presence of a large number of microvilli. The function of microvilli is to enhance absorption, Due to the presence of microvilli, the epithelium is also called as brush bordered columnar epithelium.
So the correct option is A.

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