After taking a long deep breath,we do not res | vedclass

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Question

(C) When we take a long deep breath (forced inspiration followed by hyperventilation),the partial pressure of $CO_2$ $(PCO_2)$ in the blood decreases

Vedclass · Accepted Answer

Less $CO_2$ in blood

Vedclass · Answer

(C) When we take a long deep breath (forced inspiration followed by hyperventilation),the partial pressure of $CO_2$ $(PCO_2)$ in the blood decreases significantly.Since the respiratory rhythm center in the medulla is primarily sensitive to the concentration of $CO_2$ and $H^+$ ions,a decrease in $PCO_2$ levels below the threshold level inhibits the respiratory drive for a few seconds.This temporary cessation of breathing is known as apnea,which occurs until the $CO_2$ levels in the blood rise back to the normal stimulatory range.

After taking a long deep breath,we do not respire for some seconds due to:

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