Question

From the surface of villi protrude smaller projection known as __________

(a) Microvilli

(b) Villus

(c) Fingers

(d) Cilia

The question was asked in an online quiz.

This is a very interesting question from Drugs Absorption from Non Oral Extravascular Sites topic in chapter Absorption of Drugs of Drug Biotechnology

Answer 1

Correct choice is (a) Microvilli

To explain I would say: The surface of the small intestine folds into projections called villi. The surface of each villus has further smaller projections known as microvilli. About 600 protrudes from each absorptive cell that lines the villi. Thus increases the surface area by 600 times.