Capillary Fluid Exchange and Edema Tutorial
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- What physical forces and capillary features regulate transcapillary fluid exchange?
- How do changes in tissue (interstitial) and plasma hydrostatic and oncotic pressures affect transcapillary fluid movement?
- How do changes in each of the following affect capillary pressure: arterial and venous pressures, pre- and postcapillary resistances.
- What determines the rate of fluid movement across capillaries for a given net driving force of hydrostatic and oncotic pressures?
- Why do changes in venous pressure have a greater affect on capillary pressure than changes in arterial pressure?
- Why does oncotic pressure (colloid osmotic pressure) rather than total osmotic pressure govern fluid exchange across the capillary?
- What is the significance of the reflection coefficient for proteins in terms of how it affects the oncotic pressure generated by proteins?
- How do lymphatics function in the maintenance of interstitial fluid volume?
- How can changes in capillary hydrostatic pressure, plasma oncotic pressure, capillary permeability, and lymphatic function lead to tissue edema?
- What can be done to prevent edema or to treat edema once it occurs?
Revised 11/03/06


