Cell Diagram Labeled Microvilli

The cell membrane to form microvilli stable protrusions that resemble tiny bristles.

Cell diagram labeled microvilli. Other functions of microvilli are secretion absorption adhesion of cells and mechanotransduction. The internal walls of the small intestine are covered in finger like tissue called villi. Microvilli also perform motility function. 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.

Microvilli are covered in plasma membrane which encloses cytoplasm and microfilaments though these are cellular extensions there are little or no cellular organelles present in the microvilli. Microvilli store membrane and microfilament materials. These microvilli create a large surface area to maximize the absorption and secretion of solutes na cl glucose etc the most essential function of this portion of the nephron. Simple cuboidal cells form this tubule with prominent microvilli on the luminal surface forming a brush border.

They make white blood cell migration possible. They are commonly about 0 1 µm diameter and range in length from a fraction of a micrometer to about 2 µm. Each microvillus has a dense bundle of cross linked actin filaments which serves as its structural core. 20 to 30 tightly bundled actin filaments are cross linked by bundling proteins.

Generally they are shorter and smaller in diameter than cilia. Each of these villi is covered in even smaller finger like structures called microvilli. 5 6 7 and 8.