Gray ramus communicans

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Gray ramus communicans
Scheme showing structure of a typical spinal nerve. 1. Somatic efferent. 2. Somatic afferent. 3,4,5. Sympathetic efferent. 6,7. Sympathetic afferent.
Diagram of the course and branches of a typical intercostal nerve. (Rami communicantes labeled at center.)
Latin ramus communicans griseus nervi spinalis
Gray's subject #208 920
Dorlands/Elsevier r_02/12689524

Each spinal nerve receives a branch, gray ramus communicans, from the adjacent ganglion of the sympathetic trunk.

They contain unmyelinated postganglionic sympathetic fibers.

Deep and superficial dissection of the lumbar plexus.

Thoracic portion of the sympathetic trunk.

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

v • d • e
Nerves - autonomic nervous system (sympathetic nervous system/ganglion/trunks and parasympathetic nervous system/ganglion)
Head/cranial Ciliary ganglion (Short ciliary nerves) - Pterygopalatine ganglion (Nerve of pterygoid canal) - Submandibular ganglion - Otic ganglion
Neck/cervical paravertebral ganglia: Cervical ganglia (Superior, Middle, Inferior) - Stellate ganglion
prevertebral plexus: Cavernous plexus - Internal carotid
Chest/thorax paravertebral ganglia: Thoracic ganglia

prevertebral plexus: Cardiac plexus - Esophageal plexus - Pulmonary plexus - Thoracic aortic plexus

splanchnic nerves: Thoracic splanchnic nerves

cardiac nerves: Superior - Middle - Inferior
Abdomen/Lumbar 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 nervous system: Meissner's plexus • Auerbach's plexus
Pelvis/sacral paravertebral ganglia: Sacral ganglia - Ganglion impar
splanchnic nerves: Pelvic splanchnic nerves - Sacral splanchnic nerves
All Rami communicans (White, Gray) - Preganglionic fibers - Postganglionic fibers
v • d • e
Anatomy of torso (primarily): the spinal cord
Spinal nerve Dorsal (Root, Ganglion, Ramus) • Ventral (Root, Ramus) • Sympathetic trunk • rami communicantes (Gray, White)
Gray matter/Rexed laminae Posterior horn (Column of Clarke, Substantia gelatinosa of Rolando, Nucleus proprius) • Lateral horn • Anterior horn • Central canal/Substantia gelatinosa centralis
White matter: somatic/ascending (blue)
White matter: motor/descending (red)
Layers Epidural space • Dura mater • Subdural space • Arachnoid mater • Subarachnoid space • Pia mater
Other structures Denticulate ligaments • Conus medullaris • Cauda equina • Filum terminale • Cervical enlargement • Lumbar enlargement • Anterior median fissure
Retrieved from "http://en.wikipedia.org/wiki/Gray_ramus_communicans"
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