muscularis mucosae

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Related to muscularis: submucosa, Muscularis externa

muscularis mucosae

[‚məs·kyə′lar·əs myü′kō·sē]
(histology)
Thin, deep layer of smooth muscle in some mucous membranes, as in the digestive tract.
References in periodicals archive ?
The gastric mucosal treated with sucralfate after ulceration appears like the normal control with muscularis externa intact with the submucosa (Figures 2a and b).
Tunica muscularis of esophagus of duck was made up of thick inner circular and narrow outer longitudinal smooth muscle fibers layers.
Serosal abrasions need not be repaired; however, small tears of the serosa and muscularis can be managed with a single layer of interrupted 3-0 absorbable or permanent silk suture on a tapered needle.
The tunica muscularis of the fish digestive tract is usually organized into circular and longitudinal layers; however, a third oblique layer may occasionally occur (Takashima & Hibiya, 1995; Hernandez et al.
83,84) However, desmin immunostain cannot distinguish hyperplastic muscularis mucosae from muscularis propria, a potentially challenging distinction in transurethral resection specimens.
Endosonographic characteristics of the lesion suggestive of a high risk of malignancy, such as lesions with heterogeneous echo-pattern and involvement of the deep muscularis propria layer (the 4th layer), were found to be strongly correlated with the final diagnosis with a sensitivity of 94.
Tumours invading the muscularis propria were divided into muscle-invasive (MIBC), and high-risk muscle invasive tumours (MIBC-HR), consistent with previous reports (12,13) (Table 1).
However, histological assessment of the bowel showed a well developed submucosal abscess, containing tattoo pigment, with the suppurative inflammation focally extending into the superficial muscularis propria.
The muscularis mucosa, which is the last layer of the mucosa, is composed of two smooth muscle layers that are circular interiorly and longitudinal exteriorly.
Under the light microscope, the muscularis mucosa is represented by a thin layer of smooth muscle cells lining the lower limits of the intestinal glands.
Epithelium Lamina propria Fundic part of Keratinized stratified Loose connective tissue stomach squamous epithelium separating the muscularis mucosae from epithelium, no glands, small capillaries Body of stomach The mucous membrane is Loose connective tissue folded to form gastric with cores of it entering pits.
A homogenously hypoechogenic lesion that originated from the muscularis propria with regular borders and without marginal halo (Figure 3 and Video 1) was visible on EUS.