Physiology The function of Carotid body is A Measures the change in PO2 in arterial blood B Measures PO2 in venous blood C Measures the change in CO2 in arterial blood D Measures the change in CO2 in venous blood 💡 Explanation The function of Carotid body is ✓ Correct Answer: A. Measures the change in PO2 in arterial blood