What do you mean by extracellular fluid? - ProProfs Discuss
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What do you mean by extracellular fluid?

This question is part of Basic surgery (100q).1
Asked by Sysplore, Last updated: Nov 22, 2020

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sysplore3

sysplore

sysplore3
Sysplore

Answered Aug 24, 2017

The plasma volume constitutes one fourth of the total extracellular fluid volume

The total extracellular fluid volume represents 20% of body weight. The plasma volume is approximately 5% of body weight. Sodium is the principal cation. The Gibbs-Donan equilibrium equation explains the higher total concentration of cations in plasma. Except for joint fluid and cerebrospinal fluid, the majority of the interstitial fluid exists as a rapidly equilibrating component.
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