If the tubular filtrate becomes too acidic,what is secreted by the tubular epithelial cells to buffer the secreted H⁺? A) HCO₃^- B) OH^- C) NH₃ D) NH₄⁺

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Ammonia (NH₃) is secreted by the tubular epithelial cells to buffer the secreted H⁺ ions, forming ammonium ions (NH₄⁺) in the tubular fluid, which helps to maintain acid-base balance.

If the Tubular Filtrate Becomes Too Acidic,what Is Secreted by the Tubular