The respiratory centres, which control inspiration and expiration, are located in:
Correct answer: B. Medulla oblongata
- A. Diencephalon
- B. Medulla oblongata
- C. Cerebellum
- D. Spinal cord
Explanation
(b) : The respiratory centre is the medulla oblongata, that regulates the rate and depth of breathing. The dorsal group of neurons located in the dorsal portion of medulla oblongata regulates inspiration and ventral group of neurons located in the ventrolateral part of medulla oblongata regulates both inspiration and expiration.
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Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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