Question

 Explain how does the kidneys maintain pH balance?

06 Jul 2025
Answer :
Word Count : 845
The kidneys play a crucial role in maintaining the body's acid-base balance, ensuring that the pH of blood remains within the narrow range of 7.35 to 7.45. This balance is essential for the proper functioning of enzymes, metabolic processes, and cellular functions. The kidneys regulate blood pH by managing the excretion of hydrogen ions (H⁺), reabsorption of bicarbonate ions (HCO₃⁻), and production of new bicarbonate. These mechanisms operate in concert with buffer systems and respiratory compensation to maintain homeostasis. The human body produces a significant amount of acids daily from metabolic processes. Volatile acids like carbonic acid result from the metabolism of carbohydrates and fats, while non-volatile acids such as sulfuric acid and phosphoric acid are derived from protein metabolism. The lungs help eliminate volatile acid via carbon dioxide (CO₂), while the kidneys handle non-volatile acid excretion. This function becomes __________ _________ _______ _________ _______ ____ _______ _____ ________ ______ _____.
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