Multiple Choice
Which of the following neurotransmitters would be the only secretion of the sympathetic preganglionic fibers of the autonomic nervous system?
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14. The Autonomic Nervous System
Neurotransmitters of the ANS
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Which of the following neurons secrete norepinephrine?
A
preganglionic parasympathetic
B
somatic motor
C
postganglionic parasympathetic
D
preganglionic sympathetic
E
postganglionic sympathetic
Verified step by step guidance1
Understand the role of the autonomic nervous system, which is divided into the sympathetic and parasympathetic systems, each with distinct neurotransmitters.
Recognize that norepinephrine is primarily associated with the sympathetic nervous system, which is responsible for the 'fight or flight' response.
Identify the types of neurons involved in the sympathetic nervous system: preganglionic and postganglionic neurons.
Note that preganglionic sympathetic neurons release acetylcholine, not norepinephrine.
Understand that postganglionic sympathetic neurons secrete norepinephrine, which acts on target organs to elicit a response.
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