During an Arctic research expedition, a scientist is exposed to freezing temperatures. Their body initiates thermoregulatory mechanisms, such as shivering and vasoconstriction, to maintain core temperature. At the same time, the physical exertion of walking through deep snow causes an increase in blood carbon dioxide (CO2\text{CO}_2CO2) concentration, stimulating an increase in heart rate and breathing rate to maintain oxygen delivery to tissues.
Which of the following correctly pairs the brain regions responsible for coordinating these two separate physiological responses?
Thermoregulatory: Medulla oblongata; Cardiorespiratory: Hypothalamus
Thermoregulatory: Cerebrum; Cardiorespiratory: Medulla oblongata
Thermoregulatory: Hypothalamus; Cardiorespiratory: Medulla oblongata
Thermoregulatory: Hypothalamus; Cardiorespiratory: Cerebellum