A competitive driver approaches the end of the board with rapidly beating heart and a dry mouth, a result of increased
Correct answer: A. Adrenaline
- A. Adrenaline
- B. Amines.
- C. Cortisone
- D. Endrophins.
Explanation
Rapid heartbeat and dry mouth reflect sympathetic nervous-system arousal, which is supported by adrenaline released during stress or intense competition. Cortisone is a stress-related hormone, but it is not the primary explanation for these immediate autonomic symptoms.
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