15 Questions
What percentage of total body weight is total body water in healthy adults?
50–60%
What makes up about one-third of body fluid?
Extracellular fluid
Which component surrounds cells in the extracellular fluid?
Interstitial fluid
What are the two components that make up at least 97% of the extracellular fluid?
Plasma and interstitial fluid
What percentage of the extracellular fluid does the transcellular fluid make up?
About 2.5%
What percentage of total body water is typically found in healthy adults?
50–60%
Which component makes up about one-third of the body fluid?
Extracellular fluid
What is the main component of the extracellular fluid?
Interstitial fluid
What makes up at least 97% of the extracellular fluid?
Plasma and interstitial fluid
What percentage of the extracellular fluid does the transcellular fluid make up?
About 2.5%
What percentage of the extracellular fluid is made up of interstitial fluid?
About one-third
What proportion of the extracellular fluid is composed of blood plasma and interstitial fluid?
About 97%
What is the approximate percentage of total body water in healthy adults?
60%
Which component makes up the remaining two-thirds of body fluid apart from extracellular fluid?
Intracellular fluid
What is the approximate percentage of total body weight that total body water constitutes in healthy adults?
60%
Study Notes
Body Fluid Composition
- Total body water makes up approximately 55-60% of total body weight in healthy adults.
- Total body water is divided into two main components: intracellular fluid (ICF) and extracellular fluid (ECF).
- The extracellular fluid makes up about one-third of body fluid.
Extracellular Fluid Composition
- The extracellular fluid is composed of two main components: interstitial fluid and transcellular fluid.
- Interstitial fluid and blood plasma make up at least 97% of the extracellular fluid.
- Transcellular fluid makes up about 3% of the extracellular fluid.
- Interstitial fluid makes up about 75% of the extracellular fluid, while blood plasma makes up about 22%.
- The remaining 3% of the extracellular fluid is composed of transcellular fluid.
Fluid Distribution
- Intracellular fluid makes up the remaining two-thirds of body fluid apart from extracellular fluid.
- Intracellular fluid surrounds cells in the extracellular fluid.
Test your knowledge of cell biology with this quiz on extracellular fluid. Learn about the composition and distribution of body fluid, and understand the differences between extracellular and intracellular fluid.
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