GENERAL HISTOLOGY

EPITHELIUM

EPITHELIAL TISSUES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Microvilli decrease the exposed surface area of epithelial tissues
A
True
B
False
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -The purpose of microvilli is to increase the surface area on the epithelial cell that they are located on. Microvilli located in the small intestine function to increase the surface area in order to absorb more nutrients.

Detailed explanation-2: -They increase the surface area for diffusion and reduce the increase in the volume. Therefore, the correct option is option C. Note: The microvillus are fine cell projections that are present in the plasma membrane. They are formed from the cytosol and the plasma membrane and project outside the body of the cells.

Detailed explanation-3: -Microvilli, found in tightly packed arrays on the apical surfaces of polarized epithelial cells, increase the surface area of the cell exposed to the lumen to enhance absorption and secretion.

Detailed explanation-4: -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.

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