Which of the following statements about extracellular fluid are true? - ProProfs Discuss
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Which of the following statements about extracellular fluid are true?



A. The total extracellular fluid volume represents 40% of the body weight.
B. The plasma volume constitutes one fourth of the total extracellular fluid volume
C. Potassium is the principal cation in extracellular fluid.
D. The protein content of the plasma produces a lower concentration of cations than in the interstitial fluid
E. The interstitial fluid equilibrates slowly with the other body compartments.

This question is part of Basic surgery (100q).1
Asked by Sysplore, Last updated: Sep 16, 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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