pinocytosis


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pinocytosis

/pino·cy·to·sis/ (pi″nah-si-to?sis) a mechanism by which cells ingest extracellular fluid and its contents; it involves the formation of invaginations by the cell membrane, which close and break off to form fluid-filled vacuoles in the cytoplasm.pinocytot?ic
Enlarge picture
Pinocytosis of small fluid droplets.

pin·o·cy·to·sis

(pĭn′ə-sĭ-tō′sĭs, -sī-, pī′nə-)
n.
Introduction of fluids into a cell by invagination of the cell membrane, followed by formation of vesicles within the cells.

pin′o·cy·tot′ic (-tŏt′ĭk) adj.

pinocytosis

[pī′nōsītō′sis]
Etymology: Gk, pinein + kytos + osis, condition
the process by which extracellular fluid is taken into a cell. The plasma membrane develops a saccular indentation filled with extracellular fluid and then pinches off the indentation, forming a vesicle or vacuole of fluid within the cell.

pinocytosis

 [pin″o-si-to´sis]
a mechanism by which cells ingest extracellular fluid and its contents; it involves the formation of invaginations by the cell membrane, which close and break off to form fluid-filled vacuoles in the cytoplasm (see accompanying illustration). adj., adj pinocytot´ic.
Mechanism of pinocytosis. Tiny droplets of fluid are trapped by the folds of the plasma membrane and engulfed as fluid-filled vesicles into the cytoplasm.

pinocytosis (pī´nōsītō´sis),

pinocytosis

a mechanism by which cells ingest extracellular fluid and its contents; it involves the formation of invaginations by the cell membrane, which close and break off to form fluid-filled vacuoles in the cytoplasm.
Enlarge picture
Mechanism of pinocytosis. By permission from Guyton R, Hall JE, Textbook of Medical Physiology, Saunders, 2000

pin·o·cy·to·sis

(pin'ō-sī-tō'sis, pī'nō-),
The cellular process of actively engulfing liquid, a phenomenon in which minute incuppings or invaginations are formed in the surface of the cell membrane and close to form fluid-filled vesicles; it resembles phagocytosis.
[pinocyte + G. -osis, condition]

pin·o·cy·to·sis

(pin'ō-sī-tō'sis)
The cellular process of actively engulfing liquid, a phenomenon in which minute incuppings or invaginations are formed in the surface of the cell membrane and close to form fluid-filled vesicles; it resembles phagocytosis.
[pinocyte + G. -osis, condition]

pin·o·cy·to·sis

(pin'ō-sī-tō'sis)
The cellular process of actively engulfing liquid, a phenomenon in which minute incuppings or invaginations are formed in the surface of the cell membrane and close to form fluid-filled vesicles.
[pinocyte + G. -osis, condition]
References in periodicals archive ?
Gonzalez-Noriega A, Grubb JH, Talkad V and WS Sly Chloroquine inhibits lysosomal enzyme pinocytosis and enhances lysosomal enzyme secretion by impairing receptor recycling.
Once the EB attaches to the columnar epithelial cell it is incorporated into the cell by a process of pinocytosis, in which the organism is surrounded with a phagosome membrane (Friss 1972).
The transfer of substances and the amount that enters the fetal circulation are tightly controlled by at least four different mechanisms; simple diffusion, active transport, biotransformation through metabolic enzymes, and phagocytosis or pinocytosis (Syme et al.