Preganglionic neurons of the parasympathetic division are located in the brainstem and sacral divisions of the spinal cord.
What are preganglionic neurons?
- Preganglionic fibers are the nerve cells of the autonomic nervous system (ANS) that link the ganglia to the central nervous system.
- Preganglionic fibers are all cholinergic. It means that they use acetylcholine as their neurotransmitter, and are myelinated, whether they are found in the sympathetic or parasympathetic nervous systems.
What are parasympathetic preganglionic fibres?
- The cell bodies that make up the parasympathetic division come from either the brainstem or the sacral spinal cord.
- Preganglionic parasympathetic fibers frequently project to and form synapses with nearby postganglionic neurons.
In the spinal cord, the brainstem and the sacral divisions are the locations where the preganglionic neurons of the parasympathetic divisions are present.
Learn more about preganglionic neurons here:
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