GENERAL HISTOLOGY

Detailed explanation-1: -Microvilli on the surface of epithelial cells such as those lining the intestine increase the cell’s surface area and thus facilitate the absorption of ingested food and water molecules.

Detailed explanation-2: -Microvilli have traditionally been viewed as passive scaffolds that increase the surface area of the gut wall. The apical plasma membrane tightly wraps around each protrusive bundle of actin, providing more space for nutrient processing and absorption.

Detailed explanation-3: -On the surface of each columnar cell there are about 600 very fine projections called microvilli that further increase the absorptive area of each villus. Villi of the intestine move in swaying, contracting motions. These movements are believed to increase the flow of blood and lymph and to enhance absorption.

Detailed explanation-4: -Explain how villi and microvilli aid in absorption. Villi and microvilli increase the surface area of the small intestines, which aids in the absorption of bile salts and vitamin B12. Villi and microvilli increase the surface area of the small intestine, which increases the absorption of nutrients by diffusion.