Question

Which of the following statements pertaining to GI absorption is FALSE?

a. Absorption occurs primarily in the small intestine

b. Both passive movements and active transport play roles in absorption

c. Plicae circulares, villi, and microvilli are all structures that help to increase absorption within the GI tract

d. After a meal, blood flow through the mucosa of the small intestine increases

Answer 1

Dear Student,

*Absorption occurs primarily in the small intestine, especially in jejunum

*Some components like water and lipids are absorbed through passive diffusion, while sodium bicarbonate gets absorbed through active transport ,Fructose by facilitated diffusion and aminoacids, glucose by co-transport.

* These structures are the finger like projections and foldings seen mostly in the small intestine which increases the surface area for increasing absorption.

So, the answer for this is D.