Cell Diagram Labeled Microvilli

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.

Cell diagram labeled microvilli. They are commonly about 0 1 µm diameter and range in length from a fraction of a micrometer to about 2 µm. Microvilli form a rather polymorphic class of surface protuberances that are regularly packed in some tissues and loosely positioned in oth ers. They can sweep unwanted materials towards the resorptive part of the cell. Other functions of microvilli are secretion absorption adhesion of cells and mechanotransduction.

Other articles where microvilli is discussed. The internal walls of the small intestine are covered in finger like tissue called villi. Each of these villi is covered in even smaller finger like structures called microvilli. 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. 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. Simple cuboidal cells form this tubule with prominent microvilli on the luminal surface forming a brush border. Microvilli store membrane and microfilament materials.

The cell membrane to form microvilli stable protrusions that resemble tiny bristles. Microvilli also perform motility function. Generally they are shorter and smaller in diameter than cilia.