PATHOLOGY MCQ
URINARY SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The kidneys can help maintain a rising blood pH by excreting ____ ions and reabsorbing ____ ions by the tubule cells.
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bicarbonate; hydrogen
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hydrogen; bicarbonate
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ammonia; carbonic acid
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carbon dioxide; oxygen
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Explanation:
Detailed explanation-1: -The kidneys have two major functions in acid-base homeostasis, reabsorption of filtered bicarbonate and generation of new bicarbonate. First, daily filtered bicarbonate averages approximately 4200 mmol/d for the adult with normal renal function, and is reabsorbed almost completely by renal epithelial cells.
Detailed explanation-2: -The bicarbonate buffer system is an acid-base homeostatic mechanism involving the balance of carbonic acid (H2CO3), bicarbonate ion (HCO3-), and carbon dioxide (CO2) in order to maintain pH in the blood and duodenum, among other tissues, to support proper metabolic function.
There is 1 question to complete.