How is the urinary system is involved in regulating the pH i

How is the urinary system is involved in regulating the pH in bodily fluids?

Solution

Urinary system has two major roles in the pH balance.

1. kidney excrete H⁺ ion from the body into the urine

2. kidney also accumulate HCO₃^- into the blood which works as a buffering agent for the blood. This bicarbonate ions reabsorbance is done in Tubular fluid with the help of tubular cells.

So by this way of maintaining the balance of acid and base together urinary system regulates the pH of body.