Actividad 2 física - resumen de osmosis PDF

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resumen de osmosis
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CLINICAL EXAMPLES OF OSMOTIC PRESSURE Osmosis is an important factor determining the pressure in the interstitial fluid and therefore its volume. The following values are typical for the osmotic pressure Inside capillary πi = 28 torr Outside capillary, interstitial fluid πo = 5 torr There are three ways that the balance of can be disturbed, each of which can give rise to edema, a collection of fluid in the tissue. The first is a higher average pressure along the capillary. The second is a reduction in osmotic pressure because of a lower protein concentration in the blood (hypoproteinemia). The third is an increased permeability of the capillary wall to large molecules, which effectively reduces the osmotic pressure. hypoproteinemia, which reduces the osmotic pressure of the blood. This can happen, for example, in nephrotic syndrome. The lowering of the osmotic pressure in the blood means that the pd rises. Therefore, there is a net movement of water into the interstitial fluid. Osmotic diuresis: As the urine flows through the rest of the nephron, a series of complicated processes cause a net reabsorption of most of the water and varying amounts of the solutes. The result is an increase in urine volume and a dehydration of the patient called osmotic diuresis Osmotic Fragility of Red Cells: In the disease called hereditary spherocytosis the red cells are more rounded. If a red cell is placed in a solution that has a higher driving pressure than that inside the cell, water moves in and the cellswells until it bursts. Volume Transport Through a Membrane: The volume fluence rate or volume flow per unit area per second through a membrane is Jv.

Russell K. Hobbie and Bradley J. Roth. (2015). Intermediate Physics for Medicine and Biology. New York: Springer. pp. 121 - 123....