Role of Kidney in Acid Base Balance of the Body.

 

Introduction.

• Kidneys along with lungs play a major role in acid base balance of the body.

• Lungs are very fast but capacity is limited while kidneys are comparatively slower but their capacity is very high.

• Lungs maintain acid base balance by converting HCO3 ions to Co2 which is exhaled.

• Kidneys largely reabsorb Na+ ions in exchange of H+ ions which are excreted in urine and imparts acidity to urine.

• The H+ ions are also excreted in the form of NH4+ and Hydrogen Phosphate Salts.

• The H+ ions are formed by help of “Carbonic Anhydrase” enzyme in cells as well as lumen of Renal tubule as,

Commonly Asked Question.

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