Which part of the brainstem regulates heartbeat and breathing?

Which part of the brainstem regulates heartbeat and breathing?

• A. Pons
• B. Medulla
• C. Cerebellum
• D. Thalamus

Answer: (B)

Heartbeat and breathing are controlled by autonomic centers in the medulla oblongata, a core part of the brainstem. This region houses the cardiac center that adjusts heart rate and the respiratory rhythmicity center that sets the basic breathing pattern, working with chemical signals from sensors in the blood and input from higher brain areas. The pons helps refine breathing, but the medulla is the essential regulator for both functions. The cerebellum is focused on movement coordination, and the thalamus acts mainly as a sensory relay—neither regulates heartbeat or breathing.

Heartbeat and breathing are controlled by autonomic centers in the medulla oblongata, a core part of the brainstem. This region houses the cardiac center that adjusts heart rate and the respiratory rhythmicity center that sets the basic breathing pattern, working with chemical signals from sensors in the blood and input from higher brain areas. The pons helps refine breathing, but the medulla is the essential regulator for both functions. The cerebellum is focused on movement coordination, and the thalamus acts mainly as a sensory relay—neither regulates heartbeat or breathing.