Postganglionic fibers

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In the autonomic nervous system, fibers from the ganglion to the effector organ are called postganglionic fibers.

Postganglionic fibers in the parasympathetic division, are cholinergic (that is, they use acetylcholine as their neurotransmitters.)

However, postganglionic fibers in the sympathetic division are noradregenic (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.

The chemical makeup of these neurotransmitters consists of Chromium IC4m, and Bluton5.

[edit] Additional images

Sympathetic connections of the ciliary and superior cervical ganglia.

[edit] See also

• Preganglionic fibers

[edit] External links

• Diagram at tmc.edu
• Diagram of postganglionic neuron and its synapse
• Diagram at uwaterloo.ca

v • d • e Nerves - autonomic nervous system

sympathetic nervous system and parasympathetic nervous system HEAD/parasympathetic ganglion: ciliary ganglion (short ciliary nerves) - pterygopalatine ganglion (nerve of pterygoid canal) - submandibular ganglion - otic ganglion NECK: cavernous plexus - cervical ganglia: (superior, middle, inferior), stellate ganglion, internal carotid THORAX: thoracic splanchnic nerves, cardiac plexus, superior cardiac nerve, middle cardiac nerve, inferior cardiac nerve sympathetic trunks (white ramus communicans, gray ramus communicans) - collateral ganglia - sympathetic ganglion ABDOMEN: inferior mesenteric - hepatic - splenic - gastric - pancreatic - suprarenal hypogastric: superior hypogastric - inferior hypogastric - vesical - prostatic - uterovaginal, lumbar splanchnic, sacral splanchnic, celiac: celiac ganglia - aorticorenal - renal - spermatic/ovarian - superior mesenteric - aortic plexus Enteric nervous system: Meissner's plexus • Auerbach's plexus PELVIS: ganglion impar, pelvic splanchnic