Human urine is usually acidic because :

Options

(a) excreted plasmaproteins are acidic
(b) potassium and sodium exchange generates acidity
(c) hydrogen ions are actively secreted into the filtrate
(d) the sodium transporter exchanges one hydrogen ion for each sodium ion,inperitubular capillaries

Correct Answer:

hydrogen ions are actively secreted into the filtrate

Explanation:

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