Question

Harry is awake all night with diarrhea and his blood ph drops to 7.25. what would occur in order to maintain homeostasis?

1. faster rate of breathing

2. kidney reabsorption of h+

3. kidney secretion of bicarbonate

4. hypoventilation

5. increased urine volume

Answer 1

1. faster rate of breathing

Explanation: His blood pH drops to normal range of 7.38-7.42. A lower ph f the blood is called acidosis. This occurs due to increase H+ ion in the blood.

As a compensatory mechanism in acidosis, these H+ ion more avidly combine with bicarbonate ions in the lungs to form CO2 and H2O. As the blood pH is low, this stimulates the respiratory center to increase the rate and depth of the respiration in order to wash out more CO2 from the lungs so that the H+ ion level could be decreased in order to restore the pH back to normal range.

Hence in Acidosis, there occurs hyperventilation in the lung.

In kidneys, more reabsorption of bicarbonate and more excretion of H+ ion occurs in acidosis.