| Nerve: Postganglionic autonomic fibers | ||
|---|---|---|
 | ||
| Sympathetic connections of the ciliary and superior cervical ganglia. | ||
| [[Image:|250px|center|]] | ||
| Latin | neurofibrae postganglionicae | |
| Gray's | subject # | |
| Innervates | ||
| From | ||
| To | ||
| MeSH | [1] | |
Acetylcholine
Norepinephrine
- Main article: Autonomic ganglia
In the autonomic nervous system, fibers from the ganglion to the effector organ are called postganglionic fibers.
They are located within the sympathetic chain ganglia or in collateral ganglia outside of the sympathetic trunk.
Neurotransmitters[]
The neurotransmitters used for postganglionic fibers differ:
- In the parasympathetic division, they are cholinergic (that is, they use acetylcholine as their neurotransmitters.)
- In the sympathetic division, most are adrenergic (that is, they use norepinephrine as their neurotransmitters.) One exception of this is the sympathetic innervation of sweat glands, which uses acetylcholine as a neurotransmitter, at both pre and post ganglionic synapses.