CRNI EXAM
1. Percentage water human adult: 50-70% total body water (average 60%)
2. Intracellular fluid (ICF): Total fluid within cells, 2/3 of body fluid 40%
3. Extracellular fluid (ECF): Total fluid outside cells, 1/3 of body fluid 20%
4. cell membrane: A cell structure that controls which substances can enter or leave
the cell. Separates the ECF from the ICF.
5. Extracellular fluid composition: interstitial fluid and plasma
6. Interstitial fluid percentage of ECF: 3/4
7. Plasma, fluid percentage of ECF: 1/4
8. Blood composition extracellular fluid: Contribute to the plasma
9. Fraction of blood within the RBC: Hematocrit
10. transcellular compartment: CSF, serous fluids (peritoneal, pleural, pericardial,
synovial)
1. Percentage water human adult: 50-70% total body water (average 60%)
2. Intracellular fluid (ICF): Total fluid within cells, 2/3 of body fluid 40%
3. Extracellular fluid (ECF): Total fluid outside cells, 1/3 of body fluid 20%
4. cell membrane: A cell structure that controls which substances can enter or leave
the cell. Separates the ECF from the ICF.
5. Extracellular fluid composition: interstitial fluid and plasma
6. Interstitial fluid percentage of ECF: 3/4
7. Plasma, fluid percentage of ECF: 1/4
8. Blood composition extracellular fluid: Contribute to the plasma
9. Fraction of blood within the RBC: Hematocrit
10. transcellular compartment: CSF, serous fluids (peritoneal, pleural, pericardial,
synovial)
