The reason that sympathetic and parasympathetic nervous systems have different effects on the organs is because
A) they are controlled by different brain regions.
B) they innervate different organ systems.
C) the sympathetic nerves travel a longer distance to reach their ganglia compared to parasympathetic nerves.
D) they release different neurotransmitters.

Question

Quizplus · Accepted Answer

Sympathetic and parasympathetic nervous systems release different neurotransmitters. Sympathetic nerves release norepinephrine (also called noradrenaline) while parasympathetic nerves release acetylcholine. This difference in neurotransmitters causes the different effects on organs.

The Reason That Sympathetic and Parasympathetic Nervous Systems Have Different