Which part of the human brain controls vital involuntary autonomic reflex centers, including cardiac regulation, respiratory breathing rate, and vasomotor tone?
Answer and explanation
Correct answer: B. medulla oblongata
- Step 1: The medulla oblongata (part of the brainstem) connects the brain to the spinal cord. Step 2. It contains vital autonomic centers: cardiac center (heart rate), respiratory center (breathing rhythm), and vasomotor center (blood pressure). Answer: medulla oblongata. Why not the others: Cerebrum governs conscious thought; cerebellum coordinates muscle balance; olfactory bulb processes smell.
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