The Kidneys Maintain Acid-Base Balance Mainly by Excreting _____ and Reabsorbing

Question

The kidneys maintain acid-base balance mainly by excreting _____ and reabsorbing _____.
A)sodium;potassium.
B)bicarbonate;sodium.
C)hydrogen;bicarbonate.
D)chloride;hydrogen

Accepted Answer

The kidneys maintain acid-base balance by excreting hydrogen ions (acid) and reabsorbing bicarbonate ions (base). Hence, option C is the correct answer. Options A, B and D are incorrect as they do not involve the excretion of acid or the reabsorption of base.