muscularis externa


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muscularis externa

[‚məs·kyə′lar·əs ek′stər·nə]
(histology)
The layer of the digestive tube consisting of smooth muscles.
References in periodicals archive ?
IL-21R immunopositive (IL-21[R.sup.+]) cells were semiquantitatively scored as follows: The mucosa-associated lymphoid compartments were individually scored: mucosa (M): intraepithelial lymphocyte (IEL) compartment (surface epithelium), lamina propria, and follicle-associated epithelium (FAE); submucosa (SM): isolated (solitary) lymphoid follicles (ILF), Peyer's patches (ileum)/colonic IEL (colon), and isolated infiltrating lymphocytes; and muscularis externa (ME): IELs and isolated infiltrating lymphocytes.
The esophagus consists of the mucosa, submucosa tunica muscularis (muscularis externa), and adventitia/serosa.
The subjects not exposed to aspirin had an intact muscularis externa, submucosa, and gastric mucosa with an abundance of chief cells found just above the submucosa occupying one-fourth of the entire gastric mucosa (Figure 1a).
nigrofasciata is composed of the four layers called as serosa (S), muscularis externa (ME), submucosa (SM) and mucosa (M) (Fig.
They are the mucosa, submucosa, muscularis externa and serosa or adventitia.
(i) The complex connective tissue matrix may contribute significantly to the passive mechanical properties of the extracellular matrix of the gastrointestinal tract and relevant changes in the connective tissue of the muscularis externa that subsequently influence their function.
11) showed the presence of several cells in the mu cosa, sub mucosa and muscularis externa. The epithelium was composed of rodlet cells, enterocytes, goblet cells and migratory lymphocytes.
As with other hollow, spheroidal organs (e.g., gallbladder, urinary bladder, and uterus), the smooth muscle of the muscularis externa of the stomach is somewhat more ran domly oriented than the term "layer" implies.
The height and thickness of mucosal projections and the thickness of muscularis externa of the oesophagus dramatically decreased from the anterior to the posterior part.
Histological examination indicated that a thick-walled nodule, which consisted of parasitic granulomas and granulation tissue, was located in the outermost connective tissue (adventitia) of the stomach wall and focally infiltrating into the layers of smooth muscles (muscularis externa), resulting in extension of the granulomatous tissue to the submucosa.
The histological analyses evidenced, along the entire digestive tract, the presence of four distinct tunicae composing the wall: mucosa, submucosa, muscularis externa and serosa, besides distinct intrinsic innervation represented by the submucosal and myenteric ganglionated plexuses, in accordance to the organ considered.
Diet did not affect thickness of tunica muscularis externa or tunica submucosa (p>0.10).