Autonomic Nervous System (ANS)

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6 Terms

1
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What is the function of the sympathetic division

Fight or flight" response (e.g., increases heart rate, dilates pupils).

2
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What is the function of the parasympathetic division?

"Rest and digest" response (e.g., decreases heart rate, increases digestion).

3
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What neurotransmitter is released by all preganglionic fibers in both the sympathetic and parasympathetic divisions?

Acetylcholine (ACh).

4
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What are the two main neurotransmitters released by postganglionic sympathetic fibers?

Norepinephrine and Epinephrine.

5
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Where are the ganglia for the sympathetic division typically located?

Close to the spinal cord (sympathetic chain ganglia) or in the abdomen (collateral ganglia)

6
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Where are the ganglia for the parasympathetic division typically located?

Close to or within the target organs.