Question

Kidney is an organ of excretion and osmoregulation in humans. Regulation of which two substances is done by the kidneys?

• A. CO₂ and proteins
• B. Sugar and salts
• C. Water and salts
• D. Water and O2

Answer 1

Answer:

C. Water and salts

• Kidneys primarily regulate the balance of water and salts in the body through excretion and reabsorption processes.

• One way the the kidneys can directly control the volume of bodily fluids is by the amount of water excreted in the urine.

• Either the kidneys can conserve water by producing urine that is concentrated relative to plasma, or they can rid the body of excess water by producing urine that is dilute relative to plasma.