Definition & Meaning | English word MICROVILLI

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Definitions of MICROVILLI

1. plural of microvillus.

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Examples of Using MICROVILLI in a Sentence

• Microvilli (: microvillus) are microscopic cellular membrane protrusions that increase the surface area for diffusion and minimize any increase in volume, and are involved in a wide variety of functions, including absorption, secretion, cellular adhesion, and mechanotransduction.
• Choanoflagellates are collared flagellates, having a funnel shaped collar of interconnected microvilli at the base of a flagellum.
• Choanocytes (also known as "collar cells") are cells that line the interior of asconoid, syconoid and leuconoid body types of sponges that contain a central flagellum, or cilium, surrounded by a collar of microvilli which are connected by a thin membrane.
• 6 mm in length (in humans), and has many microvilli projecting from the enterocytes of its epithelium which collectively form the striated or brush border.
• Club cells, also known as bronchiolar exocrine cells, are low columnar/cuboidal cells with short microvilli, found in the small airways (bronchioles) of the lungs.
• They have no shell, although small calcified spicules are embedded in the skin; these spicules are occasionally coated with an organic pellicle that is presumably secreted by microvilli.
• Polarized Caco-2 cells express tight junctions, microvilli, and a number of enzymes and transporters that are characteristic of such enterocytes: peptidases, esterases, P-glycoprotein, uptake transporters for amino acids, bile acids, carboxylic acids, etc.
• In intestinal cells, the microvilli are referred to as brush border and are protoplasmic extensions contrary to villi which are submucosal folds, while in the kidneys, microvilli are referred to as striated border.
• When they present microvilli, they are short, irregular, and present on the apical surface or pocket-like invagination on the basolateral surface of these cells.
• CatSper plays a key role in mediating hyperactive motility – prior to fertilization, sperm become entrapped within the fingerlike projections of the microvilli of the oviduct.
• Microvilli of hepatocytes extend into this space, allowing proteins and other plasma components from the sinusoids to be absorbed by the hepatocytes.
• Some consider epididymal stereocilia to be a variant of microvilli, rather than their own distinct type of structure.
• They have features common to neoplastic cells of epithelial origins, such as numerous microvilli, junctional complexes, abnormal nuclei and nucleoli, abnormal mitochondria, annulate lamellae, and lipoidal bodies.
• Myo10 is a member of an evolutionarily ancient group of myosins whose tails contain MyTH4-FERM domains and that have been shown to have important functions in cellular protrusions based on actin bundles such as filopodia, microvilli, and inner ear stereocilia.
• Microvilli covering the apical surface of the enterocytes increase the absorptive surface twentyfold.
• The hair bundle is composed of stiff microvilli called stereocilia and is involved with mechanoreception of sound waves.
• The ductuli efferentes possess cuboidal cells with microvilli and lysosomal granules that modify the ductal fluid by reabsorbing some fluid.
• The midgut cells had fewer cilia than the fore- and hindgut cells but exhibited an extensive, e-dense brush of microvilli and a nucleus in the apical third of the cell body.
• Microvilli in Ministeria suggest their presence in the common ancestor of Filasterea and Choanoflagellata.
• In posterior polymorphous corneal dystrophy, the endothelium is often multilayered and has several other characteristics of an epithelium, including the presence of desmosomes, tonofilaments, and microvilli.

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