Total Body Water Quiz

What percentage of total body weight is accounted for by total body water in a healthy adult male?

• 30-35%

• 40-45%

• 50-55%

• 60-65%

Which of the following factors decreases total body water percentage?

• Increased muscle mass

• Increased adipose tissue

• Increased hydration

• Increased extracellular fluid

Which of the following compartments contains the largest proportion of total body water?

• Intracellular fluid (ICF)

• Extracellular fluid (ECF)

• Plasma

• Interstitial fluid

The extracellular fluid (ECF) compartment makes up approximately what percentage of total body water?

• 20%

• 30%

• 40%

• 50%

Which of the following statements about total body water is true?

• It is higher in women than in men

• It is approximately 70% of body weight in elderly individuals

• It decreases with aging

• It is unaffected by body composition

Which of the following best explains why women generally have lower total body water compared to men?

• Higher metabolic rate

• Lower renal water reabsorption

• Higher percentage of body fat

• Lower extracellular fluid volume

Which of the following conditions would lead to an increase in total body water percentage?

• Dehydration

• Aging

• Increased muscle mass

• Increased adiposity