Microscopic folds that extend from the apical surface of certain epithelia to increase the surface area for absorption and secretion are called microvilli.
Microscopic folds are those fold that are found above an epithelial cell of an organ where maximum absorption takes place.
These microscopic folds have increased surface areas and a typical example is the microvilli of the small intestine.
Learn more about absorption here:
https://brainly.com/question/26061959
#SPJ1
Microscopic folds that extend from the apical surface of certain epithelia to increase the surface area for absorption and secretion are called Microvilli.
Microvilli are cellular membrane protrusions that improve diffusion surface area while minimizing volume increase than can be seen through a microscope. Plasma membrane covers microvilli, enclosing cytoplasm and microfilaments (the main structure is given by the actin filaments).
In the gastrointestinal system, microvilli serve as the major surface for nutrition absorption. The microvillar membrane is filled with enzymes that help in the breakdown of complicated nutrients into simpler molecules that are more easily absorbed because of its critical role.
Learn more about gastrointestinal absorption here: brainly.com/question/2729062
#SPJ1
