All of the following occur due to presence of carbon dioxide in blood except:
Correct answer: B. Increases respiratory volume
- A. Increases rate of breathing
- B. Increases respiratory volume
- C. Makes blood more acidic
- D. Decreases the oxygen carrying capacity of Hb
Explanation
Hypercapnia is a build-up of carbon dioxide (CO2) in the blood. It occurs when tiny air sacs in the lungs called alveoli are unable to adequately exchange CO2 from the blood for oxygen.•Increasing the concentration of carbon dioxide in the blood therefore results in more H+ ions and a lower pH. However, both these reactions are reversible, and breathing heavily to remove carbon dioxide from the body will lead to a reduction in the concentration of the H+and HCO3- ions, and hence to an increase in pH.
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