Thin layer of muscle of the gastrointestinal tract
Muscularis mucosae
Section of duodenum of cat. X 60. (Muscularis mucosae labeled at right, third from the top.)
Details
Identifiers
Latin
lamina muscularis mucosae
TA98
A05.4.01.016
FMA
68413
Anatomical terminology
[edit on Wikidata]
The muscularis mucosae (or lamina muscularis mucosae) is a thin layer (lamina) of muscle of the gastrointestinal tract, located outside the lamina propria, and separating it from the submucosa. It is present in a continuous fashion from the esophagus to the upper rectum (the exact nomenclature of the rectum's muscle layers is still being debated). A discontinuous muscularis mucosae–like muscle layer is present in the urinary tract, from the renal pelvis to the bladder; as it is discontinuous, it should not be regarded as a true muscularis mucosae.
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.
^H.G. Burkitt et al., Wheater's Functional Histology, 3rd ed.
and 28 Related for: Muscularis mucosae information
The muscularismucosae (or lamina muscularismucosae) is a thin layer (lamina) of muscle of the gastrointestinal tract, located outside the lamina propria...
Muscularis may refer to: MuscularismucosaeMuscularis externa or muscular layer This disambiguation page lists articles associated with the title Muscularis...
form the submucosal plexus. Ganglia from the plexus extend into the muscularismucosae and also extend into the mucous membrane. They contain Dogiel cells...
lymphatic vessels, elastic fibers, and smooth muscle fascicles from the muscularismucosae. Afferent and efferent nerve endings can be found in the lamina propria...
0: Cancer does not penetrate through the muscularis mucosa. Level 1: Cancer penetrates through the muscularis mucosa and invades the submucosa below but...
layer of loose connective tissue called the lamina propria, and the muscularismucosae, a thin layer of muscle that separates the mucosa from the underlying...
occur; the lamina propria, a layer of connective tissue, and the muscularismucosae, a thin layer of smooth muscle. The submucosa contains nerves including...
straight, narrow and hyperchromatic at the base. All crypts reach to the muscularismucosae. The basement membrane is frequently thickened. Elongated, fat crypts...
tube has three layers. From outer to inner, these are the serosa, muscularismucosae, and the mucosa. The outermost covering layer of serous membrane is...
feature of the ileum.: 589 A thin layer of smooth muscle called muscularismucosae A submucosa formed by dense irregular connective tissue that carries...
elsewhere in the intestinal tract, the gallbladder does not have a muscularismucosae, and the muscular fibres are not arranged in distinct layers. The...
erode the muscularismucosae, at minimum reaching to the level of the submucosa (contrast with erosions, which do not involve the muscularismucosae). Confirmation...
duodenum wall consists of a very thin layer of cells that form the muscularismucosae. Ulcers of the duodenum commonly occur because of infection by the...
may be tubular, villous, or tubulo-villous. Basement membrane and muscularismucosae are intact. Adenomas of the colon, also called adenomatous polyps...
connective tissue. Unusually cellular compared to most connective tissue Muscularismucosae – a thin layer of smooth muscle that aids the passing of material...
situ, greater omentum folded upwards. Tissue layers (mucosa, submucosa & muscularis) Nosek, Thomas M. "Section 6/6ch2/s6ch2_30". Essentials of Human Physiology...
is composed of stratified squamous epithelium, lamina propria, and muscularismucosae. At the end of the esophagus is the lower esophageal sphincter, which...
of a small, well-circumscribed colonic leiomyoma arising from the muscularismucosae and showing fascicles of spindle cells with eosinophilic cytoplasm...
while the other two layers of the mucosa, the lamina propria and the muscularismucosae, support and communicate with the epithelial layer. To securely contain...
neurons synapse with postganglionic nerve fibers that supply the muscularismucosae. Histologically, the wall of the alimentary canal shows four distinct...
appendiceal mucosa with absolutely no evidence of invasion beyond the muscularismucosae. The term mucinous adenocarcinoma is used in different contexts depending...
epithelium, a lamina propria, and a thin layer of smooth muscle called the muscularis mucosa. Beneath the mucosa lies the submucosa, consisting of fibrous connective...
squamous epithelium without keratin, a smooth lamina propria, and a muscularismucosae. The epithelium of the esophagus has a relatively rapid turnover and...
rectum. It invades the wall, infiltrating the muscularismucosae layer, the submucosa, and then the muscularis propria. Tumor cells describe irregular tubular...
aggressively invade the gastric wall, infiltrating the muscularismucosae, the submucosa and then the muscularis propria. Intestinal type adenocarcinoma tumour...
overlying bone or muscle within the oral cavity. The oral mucosa has no muscularismucosae, and clearly identifying the boundary between it and the underlying...
replicate rapidly in the cecal tissues. They migrate to the submucosa and muscularismucosae and cause severe necrosis. The parasites then move to the liver through...
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