Question

Human urine is usually acidic because

• A. The sodium transporter exchanges one hydrogen ion for each sodium ion, in periturbular capillaries
• B. Excreted plasma proteins are acidic
• C. Potassium and sodium exchange generates acidity
• D. Hydrogen ions are actively secreted into the filtrate

Answer 1

The correct option is D Hydrogen ions are actively secreted into the filtrate

Human urine is usually acidic because hydrogen ions are actively secreted into the filterate.Tubular secretion maintains the pH and ionic balance of body fluids in which hydrogen ions are actively secreted into the filtrate and bicarbonate ions are reabsorbed.Correct answer is (D).