A tiny fluid-filled vesicle (bubble) within a cell. Pinosomes are created in the process of pinocytosis in which tiny incuppings called caveolae (little caves) in the surface of the cell close and then pinch off to form pinosomes within the cytoplasm of the cell. Pinocytosis permits the active transport of fluid through the membrane surrounding the cell into the interior of the cell. The word "pinosome" stemmed from Greek roots: pinein, to drink + soma, body = a drinking body.
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A fluid-filled vacuole formed by pinocytosis. [G. pineo, to drink, + soma, body]

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pino·some (pinґo-) (piґno-sōm) [Gr. pinein to drink + -some] any of the small fluid-filled vesicles found in the cytoplasm during pinocytosis, formed by invaginations of the cell membrane (caveolae) which pinch off and become free. Called also pinocytotic vesicle.

Medical dictionary. 2011.

Look at other dictionaries:

  • pinosome — pinosome. См. пиноцитарный пузырек. (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.

  • pinosome — n. [Gr. pino, drink; soma, body] Intracellular vesicle containing material taken up by pinocytosis …   Dictionary of invertebrate zoology

  • pinosome — A pinocytotic vesicle …   Dictionary of molecular biology

  • pinosome — noun A vesicle filled with extracellular fluid, formed by pinching the cell membrane inward through pinocytosis …   Wiktionary

  • pinocytotic vesicle — pinosome …   Medical dictionary

  • пиноцитарный пузырек — pinosome пиносома, пиноцитарный пузырек. Ограниченный мембраной цитоплазматический пузырек, образующийся в результате локального впячивания клеточной мембраны при пиноцитозе. (Источник: «Англо русский толковый словарь генетических терминов».… …   Молекулярная биология и генетика. Толковый словарь.

  • пиноцитоз — pinocytosis пиноцитоз. Поглощение клеткой капелек жидкости с образованием пиносом <pinosome>; П. наряду с фагоцитозом <phagocytosis> является формой эндоцитоза. (Источник: «Англо русский толковый словарь генетических терминов».… …   Молекулярная биология и генетика. Толковый словарь.

  • macropinosome — noun A large vesicle filled with extracellular fluid and formed through macropinocytosis See Also: pinosome …   Wiktionary

  • primary lysosome — a lysosome that has not yet fused with a phagosome or pinosome …   Medical dictionary

  • secondary lysosome — a primary (or another secondary) lysosome that has fused with a phagosome or pinosome, bringing hydrolases in contact with the ingested material and resulting in digestion of the material. See also autophagy (def. 2) and heterophagy …   Medical dictionary

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