Definition noun, plural: contractile vacuoles (cell biology) A committed vacuole of eukaryotic bio cells, especially protozoa, affiliated in osmoregulation, i.e. It allows the circulation of water native the cytoplasm and also then discharges this externally by the opened of a irreversible narrow neck Supplement A contractile vacuole is a dedicated type that vacuole in eukaryotic bio cells, particularly protozoa and details unicellular algae. The is involved in osmoregulation. Osmoregulation is the procedure of regulation water potential in bespeak to keep fluid and electrolyte balance in ~ a cabinet or organism family member to the surrounding. The is essential since it maintains a consistent optimal osmotic push in the cell. With it, the cell is may be to keep the best amount the solute concentration and water. In aquatic unicellular organisms such as protozoa and algae, the cabinet is hypertonic relative to that is surrounding, i.e. The inside of the cell has higher concentration the solutes 보다 the environment. Together a result, the water has tendency to circulation into the cell through osmosis. The contractile vacuole help prevent excessive water flow that might harm and also cause rupture (lysis) come the cell. The contractile vacuole contract to expel water out of the cabinet (thus, the name). The duration of water expulsion that contractile vacuole is described as systole whereas the duration at i m sorry water flows right into it is dubbed diastole. Abbreviation / Acronym:




You are watching: Contractile vacuoles are found in the eukaryotic cells of some

CV

Synonym(s):

pulsating vacuole

See also:

osmosis


Last to update on February 27th, 2021


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