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.

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The medulla oblongata and pons control respiration rates, primarily responding to CO2 levels in the blood.

Respiration Rates Are Mainly Controlled by the Medulla Oblongata and