Muscularis mucosae

Muscularis mucosae
Muscularis mucosae
Gray1058.png
Section of duodenum of cat. X 60. (Muscularis mucosae labeled at right, third from the top.)
Gray's subject #245 1144

The lamina muscularis mucosae (or muscularis mucosae) is the thin layer of smooth muscle found in most parts of the gastrointestinal tract, located outside the lamina propria mucosae and separating it from the submucosa.

In the gastrointestinal tract, the term mucosa or "mucous membrane" refers to the combination of epithelium, lamina propria, and (where it occurs) muscularis mucosae.[1] The etymology suggests this since the Latin names translate to "the mucosa's own special layer" (lamina propria mucosae) and "muscular layer of the mucosa" (lamina muscularis mucosae).

The muscularis mucosae is composed of several thin layers of smooth muscle fibers oriented in different ways which keep the mucosal surface and underlying glands in a constant state of gentle agitation to expel contents of glandular crypts and enhance contact between epithelium and the contents of the lumen.

References

  1. ^ H.G. Burkitt et al., Wheater's Functional Histology, 3rd ed.

Additional images

  • Section of the human esophagus. Moderately magnified.

  • Section of mucous membrane of human stomach, near the cardiac orifice.

  • Section of mucous membrane of human rectum. X 60.

  • Layers of stomach wall

  • General structure of the gut wall showing the Muscularis mucosa.

External links

v · d · eAnatomy of torso, digestive system: Gastrointestinal tract, excluding mouth (TA A05.3–7, TH H3.04.02-04, GA 11.1141)
Upper GI

UES · LES · Esophageal glands

Serosa / Adventitia · Muscular layer · Submucosa · Mucosa (Muscularis mucosa)
Lower GI
Layers
Serosa · Subserosa · Muscular layer · Circular folds · Submucosa · Mucosa (Muscularis mucosa, Peyer's patches, Intestinal villus, Intestinal gland)
no substructures
Layers
Serosa · Subserosa · Muscular layer · Submucosa · Mucosa
Transverse folds of rectum • Rectal ampulla

M: DIG

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noco/cong/tumr, sysi/epon

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

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Look at other dictionaries:

  • muscularis mucosae — estrato de fibras musculares pertenecientes a una mucosa como la del tubo digestivo Muscularis mucosae del esófago [A05.4.01.016] Muscularis mucosae gástrica [A05.5.05.029] Muscularis mucosae del intestino delgado [A05.6.01.010] Muscularis… …   Diccionario médico

  • muscularis mucosae — muscularis mu·co·sae myü kō sē also muscularis mu·co·sa sə n MUSCULARIS (2) * * * lamina muscularis mucosae …   Medical dictionary

  • Muscularis mucosae — Sección de la pared del duodeno de un gato en la que pueden observarse la mucosa y la muscularis mucosa entre otras estructuras Se lama muscularis mucosae al fino estrato de fibras musculares que forma parte de la mucosa que tapiza la pared… …   Wikipedia Español

  • muscularis mucosae of esophagus — lamina muscularis mucosae oesophagi …   Medical dictionary

  • muscularis mucosae of large intestine — lamina muscularis mucosae intestini crassi …   Medical dictionary

  • muscularis mucosae of small intestine — lamina muscularis mucosae intestini tenuis …   Medical dictionary

  • muscularis mucosae of stomach — lamina muscularis mucosae gastrica …   Medical dictionary

  • muscularis mucosae — noun see muscularis …   Useful english dictionary

  • lamina muscularis mucosae — muscularis mucosae: the thin layer of smooth muscle fibers usually found as a part of the tunica mucosa deep to the lamina propria mucosae …   Medical dictionary

  • Lamina muscularis mucosae — Als Lamina propria (lat. „Eigenschicht“) bezeichnet man eine unter Epithelien anzutreffende Schicht aus Bindegewebe. Eine Lamina propria besitzen Schleimhäute, hier als Lamina propria mucosae bezeichnet. Tunica serosa (Peritoneum, Pleura), hier… …   Deutsch Wikipedia

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