CO 2 + H 2 O <-> H 2 CO 3 <-> H + + HCO 3 - If a person has respiratory acidosis
ID: 272460 • Letter: C
Question
CO 2 + H 2 O <-> H 2 CO 3 <-> H + + HCO 3 - If a person has respiratory acidosis, the kidney compensates by reabsorbing more bicarbonate ions from the renal filtrate back to the blood, and excreting less in the urine. How would H + , H 2 CO 3 and CO 2 levels change in the blood if HCO 3 - increases? A.) All three will increase compared to acidosis with no compensation B.) All three will decrease compared to acidosis with no compensation C.) hydrogen ion will increase, carbonic acid and carbon dioxide will decrease D.) hydrogen ion will decrease, carbonic acid and carbon dioxide will increase E.) no change
Explanation / Answer
The answer is D. Hydrogen ion will decrease , carbonic acid and carbon dioxide will increase
Because during acidosis, kidney absorb carbonic acid and expels hydrogen ion to maintain the blood pH.