: MeSH: Osmotic Pressure

Chemical Phenomena > Osmolar Concentration > Osmotic Pressure

Physical Phenomena > Mechanical Phenomena > Pressure > Osmotic Pressure

Chemical Phenomena > Permeability > Osmotic Pressure

Osmotic Pressure

The pressure required to prevent the passage of solvent through a semipermeable membrane that separates a pure solvent from a solution of the solvent and solute or that separates different concentrations of a solution. It is proportional to the osmolality of the solution. A change in the osmotic pressure caused by a dilution in the concentration of solution to which a cell is exposed. A sudden change in the osmotic pressure caused by a large change in the concentration of solution to which a cell is exposed, usually in order to cause it to burst and lose its contents. A sudden change in the osmotic pressure caused by a large increase in the concentration of solution to which a cell is exposed, usually in order to cause it to shrink in CELL VOLUME. A change in the osmotic pressure caused by an increase in the concentration of solution to which a cell is exposed. A sudden change in the osmotic pressure caused by a large dilution in the concentration of solution to which a cell is exposed, usually in order to cause it to burst and lose its contents. A change in the osmotic pressure caused by a change in the concentration of solution to which a cell is exposed.

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