pinocytosis

pinocytosis
—pinocytotic /pin'euh suy tot"ik, puy'neuh-/, adj.
/pin'euh suy toh"sis, puy'neuh-/, n. Physiol.
the transport of fluid into a cell by means of local infoldings by the cell membrane so that a tiny vesicle or sac forms around each droplet, which is then taken into the interior of the cytoplasm.
[1931; < Gk pín(ein) to drink + -O- + -CYTE + -OSIS, on the model of PHAGOCYTOSIS]

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      a process by which liquid droplets are ingested by living cells. Pinocytosis is one type of endocytosis, the general process by which cells engulf external substances, gathering them into special membrane-bound vesicles contained within the cell. In pinocytosis, rather than an individual droplet of liquid traveling passively through the cell membrane, the droplet first becomes bound, or adsorbed, on the cell membrane, which then invaginates (forms a pocket) and pinches off to form a vesicle in the cytoplasm. It is believed that a vesicle may carry extracellular fluid to the opposite side of the cell, where it undergoes exocytosis. A droplet of fluid could thus be transported through the cell without disturbing its cytoplasm. Alternatively, the contents of the vesicle may be released to mix with the cytoplasm. See also phagocytosis. (phagocytosis)

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Universalium. 2010.

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Look at other dictionaries:

  • pinocytosis — pinocytosis. См. пиноцитоз. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • pinocytosis — from Gk. pinein to drink (see IMBIBE (Cf. imbibe)) …   Etymology dictionary

  • pinocytosis — [pī΄nə sī tō′sis, pin΄əsī tō′sis] n. pl. pinocytoses [pī΄nə sī tō′sēz΄] a type of endocytosis in which the engulfed liquid remains within a separate vacuole pinocytic [pīn΄ōsīt′ik] adj. pinocytotic [pīn΄ōsī tät′ik] …   English World dictionary

  • Pinocytosis — In cellular biology, pinocytosis ( cell drinking , bulk phase pinocytosis , non specific, non adsorptive pinocytosis , fluid endocytosis ) is a form of endocytosis in which small particles are brought into the cell suspended within small vesicles …   Wikipedia

  • pinocytosis — Uptake of fluid filled vesicles into cells (endocytosis). Macro pinocytosis and micro pinocytosis are distinct processes, the latter being energy independent and involving the formation of receptor ligand clusters on the outside of the plasma… …   Dictionary of molecular biology

  • Pinocytosis — A cellular process that permits the active transport of fluid from outside the cell through the membrane surrounding the cell into the inside of the cell. In pinocytosis, tiny incuppings called caveolae (little caves) in the surface of the cell… …   Medical dictionary

  • pinocytosis — noun (plural pinocytoses) Etymology: New Latin, from Greek pinein to drink + New Latin cyt + osis more at potable Date: 1895 the uptake of fluid and dissolved substances by a cell by invagination and pinching off of the cell membrane •… …   New Collegiate Dictionary

  • pinocytosis — n. [Gr. pino, drink; kytos, container] Ingestion or absorption of surrounding fluids by a cell, that forms a vesicle by incupping of the surface membrane …   Dictionary of invertebrate zoology

  • pinocytosis — (pi no si to sis) The endocytotic process in which a cell encloses a small amount of the surrounding liquid and its solutes in tiny pinocytotic vesicles or pinosomes …   Dictionary of microbiology

  • pinocytosis — noun A form of endocytosis in which material enters a cell through its membrane and is incorporated in vesicles for digestion …   Wiktionary

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