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. The presence of these H+ ions makes the urine acidic in nature.
Human urine is usually acidic because
NEET UG 2015 — Zoology Excretory Products and their Elimination
2015mcqeasy
Human urine is usually acidic because
Official previous-year question
Held on 30 Apr 2015 · Verified 9 Jul 2026.
Options
- A
Excreted plasma proteins are acidic
- B
Potassium and sodium exchange generates acidity
- C
Hydrogen ions are actively secreted into the filtrate
- D
The sodium transporter exchanges one hydrogen ion for each sodium ion, in peritubular capillaries.
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