Microvilli


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Microvilli

 

specialized outgrowths of the plasma membrane of epithelial cells in animals and man. Microvilli are 500–3,000 nanometers in length and their diameter ranges from 50 to 100 nm. There are several thousand microvilli in a single cell. Sometimes their arrangement is orderly, as in the striated (brushlike) edges of the epithelial cells of the small intestine, where the microvilli are about 20 nm from each other. Microvilli increase the cell surface. Cuticles in vertebrate animals also consist of microvilli.

References in periodicals archive ?
InCK and TP groups, there were a few microvilli sloughed but with whole intrinsic structure and distinct intrinsic morphous, nuclear membrane integrity, have normal cell-cell junction, which showed the ultrastructures were improved markedly after treatment.
Alcohol caused irregular and deteriorated microvilli (black arrows), and swelling and vacuolar degeneration in mitochondria (red arrows).
Electron microscopy showed that co-administration of EGCG in nephropathy resulted in intact basement membrane of PCT with presence of normal microvilli. The proposed cause was activation of Nrf2 signaling pathway via antioxidative properties of EGCG22.
a hillside with no grass, the intestinal villi and microvilli
Physically, they can attach to microvilli and prevent nutrient movement.
The polymorphic cell groups often show highly irregular nuclei with pronounced nucleoli (a); the apical membranes carry long slender microvilli devoid of glycocalyx (b), and cytoplasmic vacuoles, so called neolumina (c), can be seen.
The ultrastructural analysis also suggested an integral endothelial layer with tight cell junction and microvilli, which are critical structure for endothelium cell to form a boundary and pump water from corneal stroma into aqueous humor.
Their apical surface bears a few short microvilli and in the supranuclear region there is a prominent Golgi apparatus with granular endoplasmic reticulum more basally situated.
Your intestinal lining contains tiny microvilli, which are brush-like protrusions that stick out from cells along the intestinal wall.
The researchers found that the cells in the model had successfully differentiated into a mature epithelium layer with all four of the major intestinal cell types and displayed important small intestine characteristics such as tight junctions, polarized microvilli, and secretion of digestive enzymes.