Fluid Compartments

Question 1

Water is ___% of total body mass.

Answer 1

60%

Question 2

Intracellular fluid is __ (fraction) of total body water, so it is ___% of total body mass.

Answer 2

2/3 of total body water so 40% of total body mass, (2/3*60% = 40%) .

Question 3

Extracellular fluid is __(fraction) of total body water, so it is ___% of total body mass.

Answer 3

1/3 of total body water so 20% of total body mass, (1/3*60% = 20%)

Question 4

Interstitial fluid is ___ (fraction) of extracellular fluid, so it is ___% of total body mass.

Answer 4

3/4 of extracellular fluid, so 15% of total body mass.

Question 5

Plasma is __ (fraction) of extracellular fluid, so it is ___ % of total body mass.

Answer 5

1/4 of extracellular fluid, so 5% of total body mass.