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Forced deep breathing for a few minutes ...

Forced deep breathing for a few minutes by a person sitting at rest may be followed by a temporary cessation of breathing. This is due to

A

Too much `O_(2)` in the blood

B

Too much `CO_(2)` in the blood

C

Very little `CO_(2)` in the blood

D

Both too much `O_(2)` and very little `CO_(2)` in the blood

Text Solution

Verified by Experts

The correct Answer is:
D
Deep breathing raises the `O_(2)` level of the blood. The acidity of blood increases due to excess formation of oxyhemoglobin. To maintain pH more free `CO_(2)` changes to bicarbonate and free `CO_(2)` level in blood decreases. The lack of stimulant for the inspiratory center, cessation of breathing occurs.
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