Meissner's plexus

From Wikipedia, the free encyclopedia

Nerve: Meissner's plexus

The plexus of the submucosa from the rabbit. X 50.

Mucosa Submucosa Meissner's plexus Circular muscle Auerbach's plexus longitudinal muscle Serosa or Adventitia
Latin	Plexus nervosus submucosus, plexus submucosus, plexus Meissneri
Gray's	p.1177
MeSH	Submucous+Plexus

The nerves of the small intestines are derived from the plexuses of parasympathetic nerves around the superior mesenteric artery. From this source, they run to the myenteric plexus (Auerbach's plexus) of nerves and ganglia situated between the circular muscular fibers and the longitudinal muscle fibers of the muscularis externa. From this a secondary plexus, the plexus of the submucosa (Meissner's plexus, submucous plexus, submucosal plexus, plexus submucosus) is derived, and it is formed by branches that have perforated the circular muscular fibers. This plexus lies in the submucous coat of the intestine; it also contains ganglia from which nerve fibers pass to the muscularis mucosae and to the mucous membrane.

The nerve bundles of the submucous plexus are finer than those of the myenteric plexus. Its function is to innervate cells in the epithelial layer and the smooth muscle of the muscularis mucosae.

History

German Georg Meissner was one of the first to further research the nervous system and found Meissners' plexus.

External links

Physiology at MCG 6/6ch1/s6ch1_10
submucosal+plexus at eMedicine Dictionary
Anatomy Atlases - Microscopic Anatomy, plate 10.201

This article incorporates text from a public domain edition of Gray's Anatomy.

Digestive system, physiology: gastrointestinal physiology

GI tract

Upper GI

Exocrine	Chief cells Pepsinogen Parietal cells Gastric acid Intrinsic factor Goblet cells Mucus

Processes	Swallowing Vomiting

Fluids	Saliva Gastric acid

Lower GI

Enteric nervous system

Endocrine/paracrine

G cells gastrin D cells somatostatin ECL cells Histamine

enterogastrone:	I cells CCK K cells GIP S cells secretin

Enteroendocrine cells Enterochromaffin cell APUD cell

Fluids

Intestinal juice

Processes

Either/both

Processes	Peristalsis (Interstitial cell of Cajal Basal electrical rhythm) Gastrocolic reflex Digestion

Accessory

Fluids	Bile Pancreatic juice

Processes	Enterohepatic circulation

Abdominopelvic

Peritoneal fluid

M: DIG

anat (t, g, p)/phys/devp/enzy

noco/cong/tumr, sysi/epon

proc, drug (A2A/2B/3/4/5/6/7/14/16), blte

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

M: PNS

anat (h/r/t/c/b/l/s/a)/phys (r)/devp/prot/nttr/nttm/ntrp

noco/auto/cong/tumr, sysi/epon, injr

proc, drug (N1B)

This article is issued from Wikipedia. The text is available under the Creative Commons Attribution/Share Alike; additional terms may apply for the media files.