NEET2015ZoologyExcretory Products and their EliminationActual
Human urine is usually acidic because
Options
- AExcreted plasma proteins are acidic
- BPotassium and sodium exchange generates acidity
- CHydrogen ions are actively secreted into the filtrate
- DThe sodium transporter exchanges one hydrogen ion for each sodium ion, in peritubular capillaries.
Correct answer
C. Hydrogen ions are actively secreted into the filtrate
Step-by-step solution
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.