This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Physiology
Peripheral chemoreceptors respond to hypoxia using which channel 
Select and explain. 
A. Sodium channel, B. Chloride channel, C. Calcium channel, D. Potassium channel
D: Potassium channel
Answer: D: Potassium channel 
Explanation: Peripheral chemoreceptors * Carotid bodies and aoic bodies (these carotid bodies and aoic bodies should not be confused with the baroreceptors of carotid sinus and aoic arch) * The major function of these carotid and aoic bodies is to sense hypoxia in the aerial blood and send signals to the medulla to increase ventilation * The signals are carried through afferents of vagus for aoic bodies and glossopharyngeal nerve for carotid bodies * The glomus cell is the chemosensor in the carotid and aoic bodies Ref:- Boron Medical Physiology 2nd ed; pg num:- 738