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Oncotic pressure - Definition and Overview |
| Related Words: Advocate, Affliction, Aggravation, Albatross, Annoyance, Ascendancy, Authority, Bale, Bearing, Beset, Blight, Boost, Bug, Bummer, Bump, Bunt |
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In blood plasma, the dissolved compounds have an osmotic pressure. A small portion of the total osmotic pressure is due to the presence of large protein molecules; this is known as the colloidal osmotic pressure, or oncotic pressure. Because large plasma proteins can't easily cross through the capillary walls, their effect on the osmotic pressure of the capillary interiors will, to some extent, balance out the tendency for fluid to leak out of the capillaries. In conditions where plasma proteins are reduced, e.g. from being lost in the urine (proteinuria) or from malnutrition, the result of the too low oncotic pressure can be edema - excess fluid buildup in the tissues.
Related to hydrostatic pressure.
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Example Usage of pressure |
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Decatur_Weather: Fair and 44 F at Decatur Airport, IL Winds are Southwest at 9.2 MPH (8 KT). The pressure is 1012.3 mb and the humidity http://s1z.us/ls.htm |
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Moline_Weather: ME: Fair and 38 F at Moline, Quad-City Airport, IL Winds are Calm. The pressure is 1009.7 mb and the humidity is 83%.
http://s1z.us/lt.htm |
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Strongsville_WX: SE: Fair and 37 F at Cleveland-Hopkins International Airport, OH Winds are Southwest at 6.9 MPH (6 KT). The pressure is http://s1z.us/ea.htm |
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