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What are microvilli?...

What are microvilli?

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Finger-like projections occurring on free surfaces of epithelial cells
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What is the signification fo microvilli?

Which of the following statemens is/are false about columnar epithelium ? (i) It is made of tall and slender cells (ii) Free surface may have microvilli (iii) They are found in stomach and intestine and help in secretion and absorption (iv) Cillated epithelium is mainly present in hollow structures like bronchioles and Fallopian tubes. (v) They have apical nuclei.

Which of the following statements is/are incorrect about columnar epithelium? (i) It is made of tall and slender cells. (ii) Free surface may have microvilli. (iii) They are found in stomach and intestine and help in secretion and absorption. (iv) Ciliated epithelium is mainly present in hollow structures like bronchioles and Fallopian tubes. (v) They have apical nuclei.

A student was given a sample of tissue. He observes and concludes the following characters. (i) The following The cells are composed of a single layer of tall and slender cells. (ii) Their nuclei are located at the base. (iii) Free surface may have microvilli . (iv) It is found in the lining of stomach and intestines (v) It help in secretion and absorption. Based on the above features identify the epithelium.

What are villi? What is their location and function?

Assertion : The cells of columnar often bears microvilli on their free ends. Reason : Microvilli on their free ends.

Give three differences between cilia and microvilli.