Question

multiple choice question
the ______ chemoreceptors respond to hydrogen ions, but not to carbon dioxide.
o central
o peripheral

Explanation:

Central chemoreceptors are sensitive to changes in hydrogen ion concentration (\(H^+\)) which is related to carbon dioxide (\(CO_2\)) levels (since \(CO_2 + H_2O
ightleftharpoons H_2CO_3
ightleftharpoons H^+ + HCO_3^-\)). Peripheral chemoreceptors respond to hydrogen ions (\(H^+\)), oxygen (\(O_2\)) and carbon dioxide (\(CO_2\)) levels.

Answer:

peripheral