Multiple Choice

Multiple Choice Questions

1. Which compartment contains the most body water?

   • A) Plasma

   • B) Interstitial fluid

   • C) Intracellular fluid

   • D) Extracellular fluid

2. What percentage of body weight is accounted for by total body water?

   • A) 20%

   • B) 40%

   • C) 60%

   • D) 80%

3. Sodium (Na+) is primarily found in:

   • A) Intracellular fluid

   • B) Extracellular fluid

   • C) Interstitial fluid only

   • D) Plasma only

4. Which is the main cation in intracellular fluid?

   • A) Na+

   • B) Ca2+

   • C) K+

   • D) Cl-

5. The movement of water due to osmotic pressure occurs:

   • A) From high solute to low solute concentration

   • B) From low solute to high solute concentration

   • C) Only in hyperosmotic solutions

   • D) Only in hypotonic solutions

6. A cell in a hyperosmotic solution would likely:

   • A) Shrink

   • B) Swell

   • C) Remain the same

   • D) Burst

7. Which is NOT a function of body water?

   • A) Lubrication

   • B) Temperature regulation

   • C) Ion storage

   • D) Solvent for reactions

8. The bicarbonate buffer system helps control pH by:

   • A) Regulating chloride

   • B) Converting CO₂ to HCO₃⁻

   • C) Increasing sodium levels

   • D) Breaking down amino acids

9. Respiratory regulation of acid-base balance adjusts levels of:

   • A) Sodium

   • B) Potassium

   • C) Carbon dioxide

   • D) Bicarbonate

10. Which condition results from an excess of IF, causing tissue swelling?

• A) Dehydration

• B) Hypotonic hydration

• C) Edema

• D) Hyperkalemia