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Today, there are more Hispanics than African-Americans in North America.
Sympathetic Division
A part of the autonomic nervous system that prepares the body for physical activity by accelerating heart rate, constricting blood vessels, and raising blood pressure.
Autonomic Nervous System
A system that is in charge of the body’s automatic functions, such as the respiratory and gastrointestinal systems.
Norepinephrine
A neurotransmitter released by sympathetic neurons onto organs and glands for fight-or-flight (stressful) situations.
Acetylcholine
A neurotransmitter in the nervous system that plays a critical role in muscle activation and memory formation.
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