Nerve: Splanchnic nerves
Nerves of the autonomic nervous system, with splanchnic nerves seen in center.

The splanchnic nerves are paired nerves that contribute to the innervation of the viscera, carrying fibers of the autonomic nervous system (visceral efferent fibers) as well as sensory fibers from the organs (visceral afferent fibers). All carry sympathetic fibers except for the pelvic splanchnic nerves, which carry parasympathetic fibers.

[edit] Types

The term splanchnic nerves can refer to:

• Cardiopulmonary nerves^[1]
• Thoracic splanchnic nerves (greater, lesser, and least)
• Lumbar splanchnic nerves
• Sacral splanchnic nerves
• Pelvic splanchnic nerves

Comparison

Nerve		Pre-/postsynaptic [2]	autonomic system[2]	Origin[2]	Targets[2]
Cardiopulmonary nerves		Postsynaptic	sympathetic	cervical and upper thoracic ganglia	Thoracic cavity
Thoracic splanchnic nerves	generally	Presynaptic		lower thoracic ganglia	Prevertebral ganglia
	Greater splanchnic nerve			T5-T9 or T10	Celiac ganglia
	Lesser splanchnic nerve			T10-T11	Superior mesenteric ganglia and Aorticorenal ganglia
	Least splanchnic nerve			T12	Renal ganglia
Lumbar splanchnic nerves				L1-2	Inferior mesenteric ganglia, ganglia of intermesenteric and hypogastric plexuses
Sacral splanchnic nerves				sacral part of sympathetic trunk	inferior hypogastric plexus and ganglia to the pelvic viscera
Pelvic splanchnic nerves			parasympathetic	S2-S4	intrinsic ganglia of descending and sigmoid colon, rectum, and inferior hypogastric plexus and ganglia to the pelvic viscera

[edit] References

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v • d • e Nerves - autonomic nervous system (sympathetic nervous system/ganglion/trunks and parasympathetic nervous system/ganglion) (TA A14.3, GA 9.968) Head/ cranial Sympathetic Ciliary ganglion: roots (Sensory, Sympathetic) · Short ciliary Parasympathetic Ciliary ganglion: roots (Sensory, Parasympathetic) · Short ciliary Pterygopalatine ganglion: deep petrosal · nerve of pterygoid canal branches of distribution: greater palatine (inferior posterior nasal branches) · lesser palatine · nasopalatine (medial superior posterior nasal branches) · pharyngeal Submandibular ganglion Otic ganglion Neck/ cervical Sympathetic paravertebral ganglia: Cervical ganglia (Superior, Middle, Inferior) · Stellate ganglion prevertebral plexus: Cavernous plexus · Internal carotid Chest/ thorax Sympathetic paravertebral ganglia: Thoracic ganglia prevertebral plexus: Cardiac plexus · Esophageal plexus · Pulmonary plexus · Thoracic aortic plexus splanchnic nerves: cardiopulmonary · thoracic cardiac nerves: Superior · Middle · Inferior Abdomen/ Lumbar Sympathetic paravertebral ganglia: Lumbar ganglia prevertebral ganglia: Celiac ganglia (Aorticorenal) · Superior mesenteric ganglion · Inferior mesenteric ganglion prevertebral plexus: Celiac plexus · (Hepatic, Splenic, Pancreatic) · aorticorenal (Abdominal aortic plexus, Renal/Suprarenal) · Superior mesenteric (Gastric) · Inferior mesenteric (Spermatic, Ovarian) · Superior hypogastric (hypogastric nerve, Superior rectal) · Inferior hypogastric (Vesical, Prostatic/Cavernous nerves of penis, Uterovaginal, Middle rectal) splanchnic nerves: Lumbar splanchnic nerves Enteric Meissner's plexus · Auerbach's plexus Pelvis/ sacral Sympathetic paravertebral ganglia: Sacral ganglia · Ganglion impar splanchnic nerves: Sacral splanchnic nerves Parasympathetic splanchnic nerves: Pelvic splanchnic nerves