Question

1. Where is water present in the body? List as many compartments or fluids of the body that contain water in the first column of Table 2:

Are any of the fluids or compartments you have listed in Table 2, containing pure water? If yes, which ones, if not, list in the second column of Table 2 what other substances are likely present in each of the fluids/compartments you have listed in the first column of Table 2. If you looked this information up, reference the source in column 3 of Table 2 and indicate how reliable you think the source is.

Table 2: Compartments and fluids of the human body that contain water

Body fluid, fluid compartment, or other are of the human body that contains water	Pure water Y/N	Components/ substances other than water present in that compartment/fluid	source	Reliability High, moderate, low
Intracellular fluid compartment.	Y	60%		High
Extracellular fluid	Y	20%		Moderate

Please add more rows to Table 2 if you find more than 10 compartments or fluids of the human body that contain water.

Answer 1

Body fluid, fluid compartment, or other are of the human body that contains water	Pure water Y/N	Components/ substances other than water present in that compartment/fluid	source	Reliability High, moderate, low
Intracellular fluid compartment.	Y	60%		High
Extracellular fluid	Y	20%		Moderate

organs contain water

brain Y 80-85%

lungs Y 75-80%

liver Y 70-75%

blood Y 50%

teeth Y 8-10%

heart Y 75-80%

bones Y 20-25%

kidneys Y 80-85%

muscles Y 70-75%

skin Y 70-75%