A competitive diver 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. amine
- C. cortisone
- D. endorphins
Explanation
Fear or intense excitement activates the sympathetic nervous system, which releases adrenaline and produces a rapid heartbeat and dry mouth. Cortisol is also involved in stress, but adrenaline explains these immediate fight-or-flight changes.
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