muscular layer


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muscular layer

[TA]
the muscular, usually middle, layer of a tubular structure; for most of the gastrointestinal tract, it consists of an outer longitudinal layer of muscle and an inner circular layer.
Synonym(s): tunica muscularis [TA], muscular coat
References in periodicals archive ?
Hematoxylin-eosin appearance of metastatic ureteral tumour, the adventitia and muscular layer of ureter invading by malignant cells, but ureteral mucosa was spared (x100).
The tumor involved the gallbladder mucosa with no invasion into the muscular layer or perimuscular soft tissue.
The rod must have been deflected by his pubic bone and tunnelled its way through his body between his skin and the muscular layer of his abdomen.
In addition to blocking expression of the gene that contributes to atherosclerosis, this treatment also allows grafts to undergo adaptive wall thickening by hypertrophy, expansion and strengthening, of the graft's normal muscular layer over time, making the vein act more like an artery, which can better maintain healthy blood flow.
When it affects women approaching the menopause, one of the most common causes is fibroids, benign (non-cancerous) growths that form in the muscular layer of the womb.
For the big tumour, which was projecting into the bladder cavity, the projecting portion was resected by a wing loop first, the base was vaporized to the muscular layer by a grooved roller electrode, and then the tumour bed was repeatedly coagulated by a grooved roller electrode.
Ultrasonography is the diagnostic test of choice for duplication cysts; it will demonstrate that the muscular layer of the cyst wall is continuous with the muscularis propria of the esophagus.
The static sagittal scan was also critical to the detection of urethral diverticula, which are suburethral vesicles lined by mucosa without a muscular layer, and are sites of urinary stagnation.
It was characterized by submucosal muscle fibers organized in compact interlacing bundles, strongly reminiscent of a muscular layer of bowel wall, especially of a very thick muscularis mucosa (Figures 1-4).
Interstitial Cajal-like cells were observed in the lamina propria and muscular layer.
A second layer of running or interrupted 3-0 Vicryl includes the outer muscular layer and serosa.
15,16] Nevertheless, as the invasion beyond the lamina propria into the muscular layer results exclusively from aggressive tumour biology and not from a mere anatomical contiguity, it is comprehensible why low-grade, biologically indolent tumours and benign histological entities can be managed conservatively despite the lack of a muscular layer beyond the mucosa, provided the tumours have been completely removed.

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