The principle central action of caffeine is on the________________?
Correct answer: A. Cerebral cortex
- A. Cerebral cortex
- B. Corpus callosum
- C. Hypothalamus
- D. Spinal cord
Explanation
Caffeine chiefly stimulates the cerebral cortex, producing increased alertness and reduced fatigue by blocking adenosine receptors. Its effects on the hypothalamus and spinal cord are secondary rather than its principal central action.
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