Multiple Choice
What are the two types of receptors found in the parasympathetic system?
14. The Autonomic Nervous System
Neurotransmitters of the ANS
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__________ and __________ are the major neurotransmitters released by autonomic nervous system neurons.
A
Serotonin; dopamine
B
Nicotine; muscarine
C
Acetylcholine; norepinephrine
D
Atropine; neostigmine
Verified step by step guidance1
Understand that the autonomic nervous system (ANS) is divided into the sympathetic and parasympathetic nervous systems, each using different neurotransmitters.
Recognize that the sympathetic nervous system primarily uses norepinephrine as its neurotransmitter for postganglionic neurons.
Identify that the parasympathetic nervous system primarily uses acetylcholine as its neurotransmitter for both preganglionic and postganglionic neurons.
Recall that acetylcholine is also used by the sympathetic nervous system in the preganglionic neurons.
Conclude that the major neurotransmitters released by autonomic nervous system neurons are acetylcholine and norepinephrine.
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