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Check all that apply: Which nerve fiber can release acetylcholine? a) Postganglionic parasympathetic nerve fibers b) Postganglionic sympathetic nerve fibers c) Preganglionic sympathetic nerve fibers d) Preganglionic parasympathetic nerve fibers

Check all that apply: Which nerve fiber can release acetylcholine? a) Postganglionic parasympathetic nerve fibers b) Postganglionic sympathetic nerve fibers c) Preganglionic sympathetic nerve fibers d) Preganglionic parasympathetic nerve fibers

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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**Question: Check all that apply: Which nerve fiber can release acetylcholine?** - a) Postganglionic parasympathetic nerve fibers - b) Postganglionic sympathetic nerve fibers - c) Preganglionic sympathetic nerve fibers ✔️ - d) Preganglionic parasympathetic nerve fibers ✔️ **Explanation:** In the autonomic nervous system, both preganglionic sympathetic and parasympathetic nerve fibers release acetylcholine as a neurotransmitter. Postganglionic parasympathetic fibers also release acetylcholine, while postganglionic sympathetic fibers typically release norepinephrine.
Transcribed Image Text:**Question: Check all that apply: Which nerve fiber can release acetylcholine?** - a) Postganglionic parasympathetic nerve fibers - b) Postganglionic sympathetic nerve fibers - c) Preganglionic sympathetic nerve fibers ✔️ - d) Preganglionic parasympathetic nerve fibers ✔️ **Explanation:** In the autonomic nervous system, both preganglionic sympathetic and parasympathetic nerve fibers release acetylcholine as a neurotransmitter. Postganglionic parasympathetic fibers also release acetylcholine, while postganglionic sympathetic fibers typically release norepinephrine.
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Nerve fibers that release acetylcholine as a neurotransmitter are referred to as cholinergic fibers. Acetylcholine is always released in the synaptic cleft which then binds to the receptor present on the post synaptic neuron to exert its effect.

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