Question

When the pH of the extracellular fluid declines:

1 the kidneys excrete more sodium ions.
2 the kidneys excrete more bicarbonate ions.
3 the kidneys reabsorb more potassium ions.
4 the kidneys reabsorb less water.
5 the pH of the urine increases.

Answer 1

The kidneys would increase the levels of bicarbonate ion to rise the pH of the blood.

Answer 2

The functional part of the kidney, the nephron is we're excretion and absorption takes place to concentrate urine. If the OUTSIDE environment of the nephron experiences a drop in pH, the neuron has to adjust to make the outside environment more pliable in order to continue excretion and absorption of water and NaCl. Excretion of bicarbonate is the only answer choice that could readjust the pH of the outside environment of the nephron.

Answer 3

Anonymous needs to cite the source for this information. I hope Ali doesn't copy and paste any of this; otherwise, s/he could get nailed for plagiarism.