Chemoreceptors in the Carotid and Aortic Bodies

Chemoreceptors in the carotid and aortic bodies

A) primarily respond to changes in blood oxygen levels.
B) become important in the control of breathing when oxygen declines,but carbon dioxide is normal.
C) function in conditions such as being at high altitudes.
D) produce an increase in the rate and depth of breathing
E) have all of these characteristics.