Final answer:
The sympathetic nervous system dilates pupils, increases heart rate, and coordinates stress responses in the body.
Explanation:
The sympathetic nervous system serves to:
- Dilate the pupils: When activated, the sympathetic nervous system dilates the pupils to enhance vision in fight-or-flight situations.
- Increase heart rate: It also increases heart rate to prepare the body for action during stress or danger.
- Overall: The sympathetic nervous system coordinates various responses to help the body deal with high-arousal situations.
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