Parasympathetic ganglion

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Parasympathetic ganglion
Autonomic nervous system innervation, showing the sympathetic and parasympathetic (craniosacral) systems, in red and blue, respectively
Latin	ganglion parasympathicum
Dorlands/Elsevier	g_02/12384744

Parasympathetic ganglia are the autonomic ganglia of the parasympathetic nervous system. Most are small terminal ganglia or intramural ganglia, so named because they lie near or within (respectively) the organs they innervate. The exceptions are the four paired parasympathetic ganglia of the head and neck.

Contents 1 Parasympathetic ganglia of the head and neck 2 Roots 3 Nerves supplying parasympathetic fibers 4 External links

[edit] Parasympathetic ganglia of the head and neck

These paired ganglia supply all parasympathetic innervation to the head and neck.

• ciliary ganglion (spincter pupillae, ciliary muscle)
• pterygopalatine ganglion (lacrimal gland, glands of nasal cavity)
• submandibular ganglion (submandibular and sublingual glands)
• otic ganglion (parotid gland)

[edit] Roots

Each has three roots entering the ganglion and a variable number of exiting branches.

• The motor root carries presynaptic parasympathetic nerve fibers (GVE) that terminate in the ganglion by synapsing the postsynaptic fibers traveling to target organs.
• The sympathetic root carries postsynaptic sympathetic fibers (GVE) that traverse the ganglion without synapsing.
• The sensory root carries general sensory fibers (GSA) that also do not synapse in the ganglion.

Some ganglia also carry special sensory fibers (SVA) for taste sensation.

[edit] Nerves supplying parasympathetic fibers

• oculomotor nerve (ciliary ganglion)
• facial nerve (pterygopalatine ganglion, submandibular ganglion)
• glossopharyngeal nerve (otic ganglion)
• vagus nerve (no named ganglion)
• Pelvic splanchnic nerves (no named ganglion)

[edit] External links

• Histology at BU 04601loa
• Dictionary at eMedicine Parasympathetic+ganglia
• Anatomy at UMich head_autonomics_module/autonomics_04
• The Autonomic Nervous System from the University of Arizona
• Diagrams
• "Terminal ganglion - Auerbach's plexus - plastic section"

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