- A The vagus nerve
- B Cerebral peduncle
- C Medulla oblongata
- D Cerebellum
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Answer:
C
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The medulla oblongata is located in the brainstem and is responsible for controlling involuntary activities such as breathing, heart rate, and blood pressure. The medulla contains specialized cells called respiratory centers that regulate the rate and depth of breathing based on the levels of carbon dioxide and oxygen in the body. The respiratory centers send nerve impulses to the muscles involved in breathing, including the diaphragm and intercostal muscles, to adjust the respiratory rate and depth. Therefore, option (c) is the correct answer.
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