Examlex
-Which of the following contains only protist clades?
Norepinephrine
Norepinephrine is a neurotransmitter and hormone important in the body's fight or flight response, involved in increasing heart rate and blood pressure.
Sympathetic Nerve
Part of the autonomic nervous system that stimulates the body's fight or flight response.
Sympathetic Control
The regulation of bodily functions by the sympathetic nervous system, which activates the body's "fight or flight" response.
Heart
A muscular organ that pumps blood through the circulatory system, supplying oxygen and nutrients to the tissues and removing carbon dioxide and other wastes.
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