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| | VIII. Control of Extracellular Fluid Volume |
 | | The extracellular fluid compartment is a complex entity composed not only of two major divisions, the vascular and the interstitial fluid compartments, but also of several subdivisions of these, each with differing characteristics. |
 | | It is not surprising, therefore, that the control of ECF fluid volume, in marked contrast to control of the ECF osmotic concentration, is accomplished by a variety of mechanisms, many of which are poorly understood. |
 | | It is customary to speak of control of extracellular fluid volume, but it is apparent that many of the various mechanisms are triggered by factors related to the volume of the vascular compartment. |
| www2.kumc.edu /ki/physiology/course/eight/8_1.htm (691 words) |
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