How do the kidneys function in the homeostatic regulation of pH of body fluids? Multiple Choice The kidneys manufacture hydrochloric acid and sodium hydroxide depending upon the pH needs of the body. The kidneys regulate pH through control of the amount of oxygen and carbon dioxide in the bloodstrean and absorption of hydrogens ions and bicarbonate as needed. The kidneys regulate pH of body fluids by controlling how much glucose and amino acids are present in body fluids The The

The kidneys help maintain a proper pH in body fluids primarily by reabsorbing bicarbonate (\(HCO_3^-\)) and by secreting hydrogen ions (\(H^+\)) into the urine. This process allows the kidneys to help neutralize acids and maintain the acid-base balance of the blood. Given the choices provided, the correct answer is the option that states: \( \text{“The kidneys regulate pH through control of the amount of oxygen and carbon dioxide in the bloodstream and absorption of hydrogen ions and bicarbonate as needed.”} \) Even though the mention of oxygen and carbon dioxide is more directly related to respiratory regulation, the crucial part for renal pH regulation is the adjustment of hydrogen ions and bicarbonate. Thus, the kidneys regulate pH by reabsorbing bicarbonate and secreting hydrogen ions as needed by the body.