alleryStart learning →What share of the total water in the human body sits inside cells as intracellular fluid?
AAbout 60 percent of total body water
BAbout 20 percent of total body water
CAbout 45 percent of total body water
DAbout 80 percent of total body water
Answer & Solution
Correct answer: A. About 60 percent of total body water
1. Body water is split between the fluid inside cells and the fluid outside them.
2. The intracellular fluid makes up about 60 percent of the total water in the body.
3. Everything outside cells, plasma plus interstitial fluid, holds the remaining share.
4. Twenty percent is the plasma share of extracellular fluid, not the intracellular share.
_Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 26 "Fluid, Electrolyte, and Acid-Base Balance", section Intracellular Fluid_
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