Why is breathing accelerated when a person op | vedclass

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(A) When a person holds their breath,gas exchange stops,leading to an accumulation of $CO_{2}$ in the blood and tissues. The respiratory center in the

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$CO_{2}$ buildup in the body

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(A) When a person holds their breath,gas exchange stops,leading to an accumulation of $CO_{2}$ in the blood and tissues. The respiratory center in the brain is highly sensitive to the partial pressure of $CO_{2}$ $(PCO_{2})$. As $CO_{2}$ levels rise,the blood pH drops (due to the formation of carbonic acid),which stimulates the chemoreceptors. Consequently,when the person opens their nose,the body initiates accelerated breathing (hyperventilation) to expel the excess $CO_{2}$ and restore the acid-base balance.

Why is breathing accelerated when a person opens their nose after holding their breath by closing their nose?

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