Respiration rates are mainly controlled by the medulla oblongata and
A)midbrain, in response to changes in the amount of O2 in the arterial blood. B)pons, in response to changes in the amount of CO2 in the arterial blood. C)midbrain, in response to changes in the amount of CO2 in the arterial blood. D)pons, in response to changes in the amount of O2 in the arterial blood. E)hypothalamus, in response to changes in the amount of O2 in the arterial blood.