ANATOMY

Detailed explanation-1: -Fat tissue has a lower percentage of water than lean tissue and women tend to have more fat, so the percentage of body weight that is water in the average woman is lower (52 to 55%) than it is in the average man (60%). The percentage of body weight that is water is also lower in older people and in obese people.

Detailed explanation-2: -At which stage of life is the percentage of fluid in the human body highest? In elderly individuals, 75% of body weight is made up of fluid.

Detailed explanation-3: -As shown in Figure 1-1, the largest volume of fluid in the body is inside cells. The intracellular fluid (ICF) compartment comprises approximately 40% of body weight (approximately two thirds of total body water).

Detailed explanation-4: -A comparison of the two major body fluid compartments reveals that: two-thirds of the total fluid is outside our cells and one-third is within our cells.