Villi and Absorption Flashcards
(4 cards)
1
Q
What increases absorption surface in the small intestine?
A
Villi and microvilli.
2
Q
Why do villi have a thin epithelial lining?
A
Faster diffusion of nutrients.
3
Q
Why do villi have rich blood supply?
A
Maintains high concentration gradient.
4
Q
Why do epithelial cells have many mitochondria?
A
Provide energy for active transport
