What characterizes preganglionic sympathetic fibers?
Understand the Problem
The question is asking about the characteristics of preganglionic sympathetic fibers. This involves understanding their origins, locations of cell bodies, and how they function within the autonomic nervous system, particularly in relation to the thoraco-lumbar region.
Answer
Cholinergic and myelinated.
Preganglionic sympathetic fibers are cholinergic and myelinated.
Answer for screen readers
Preganglionic sympathetic fibers are cholinergic and myelinated.
More Information
Preganglionic sympathetic fibers originate in the central nervous system and use acetylcholine as their neurotransmitter. Their myelinated nature allows for faster transmission of nerve signals.
Sources
- Preganglionic nerve fibers - Wikipedia - en.wikipedia.org
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