Question

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

• A. Increase in $pC{O}_2$ in arterial blood.
• B. Increase in pO2 in arterial blood
• C. Decrease in $p{O}_2$ in venous blood.
  
• D. Both (B) and (C)

Answer 1

The correct option is A

Increase in $pC{O}_2$ in arterial blood.

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