In some areas of the membrane, cells can exhibit specific adaptations depending on the function performed by the cell, such as increasing the cell surface area. Some of these differentiations are:
- The microvilli.
- The invaginations.
- The intercellular junctions:
- The microvilli are fingerlike extensions of the membrane of the epithelial cells of the intestine, in the area facing the interior of the tube, which allows them to expand its surface with which they absorb nutrients.