Chemoreceptors present in the carotid artery and aortic artery are sensitive to

Increase in $p C O_{2}$ in arterial blood.

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Increase in pO2 in arterial blood

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Decrease in $p O_{2}$ in venous blood.

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Both (B) and (C)

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Solution

The correct option is A
Increase in $p C O_{2}$ in arterial blood.

The chemoreceptors are sensitive to and respond to the increase of carbon dioxide and pH of the blood.

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