Which of the following is responsible for increasing the surface area for absorption in the digestive tract 20-fold?
A) cilia
B) mucosal cells
C) chyme
D) microvilli
E) All of these are correct.

Question

Quizplus · Accepted Answer

Microvilli are small, finger-like projections on the mucosal cells lining the small intestine. They greatly increase the surface area available for nutrient absorption, allowing for a 20-fold increase in absorption efficiency. Cilia are not involved in absorption, chyme is the partially digested food mixture that enters the small intestine, and while mucosal cells do contribute to increasing the surface area, it is the microvilli specifically that are responsible for the 20-fold increase.

Which of the Following Is Responsible for Increasing the Surface