Muscularis Propria
Muscularis Propria - Related Videos
04:52
Isolating Enteric Glial Cells From the Submucosa and Lamina Propria of a Mouse
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2025
This video demonstrates a method for isolating enteric glial cells from the submucosa and lamina propria of the mouse intestine. It outlines the steps involved in extracting submucosa and lamina propria tissue, isolating the enteric glial cells from them, and culturing the cells on a coated well-plate to establish an enteric glial cell culture.
05:01
Lamina Propria Mononuclear Cell Isolation: A Silica-based Density Gradient Centrifugation Technique to Obtain Mononuclear Cells from Murine Colon
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2023
In this video, we demonstrate the isolation of lamina propria mononuclear cells from murine colonic tissue by enzymatic digestion using collagenase E and silica-based density separation media gradient separation. The isolated mononuclear cells can be used for subsequent downstream analysis.
09:48
Isolation of Lamina Propria Mononuclear Cells from Murine Colon Using Collagenase E
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Cited by 9 •
2019
The goal of this protocol is to isolate mononuclear cells that reside in the lamina propria of the colon by enzymatic digestion of the tissue using collagenase. This protocol allows for the efficient isolation of mononuclear cells resulting in a single cell suspension which in turn can be used for robust immunophenotyping.
07:53
Isolation of Enteric Glial Cells from the Submucosa and Lamina Propria of the Adult Mouse
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Cited by 21 •
2018
Here, we describe the isolation of enteric-glial cells from the intestinal-submucosa using sequential EDTA incubations to chelate divalent cations and then incubation in non-enzymatic cell recovery solution. Plating the resultant cell suspension on poly-D-lysine and laminin results in a highly enriched culture of submucosal glial cells for functional analysis.
04:09
The Pocket-Creation Procedure of Endoscopic Submucosal Dissection for Large Rectal Laterally Spreading Tumors
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Cited by 1 •
2026
This study details a standardized PCM-ESD protocol for resecting large rectal LSTs, aiming to enhance dissection speed and prevent transmural perforation via submucosal tunneling.
FAQs
Its inner circular and outer longitudinal muscle layers work as an organized contractile system rather than as isolated bands. Coordinated activity between these layers changes the force applied to the lumen and helps produce distinct movement patterns. This arrangement allows the gastrointestinal tract to mix contents, move them forward, and regulate propulsion along its length.
Neural and chemical signals regulate when and how strongly the muscularis propria contracts. Their coordinated effects determine whether activity favors peristalsis, segmentation, or controlled propulsion. This signaling relationship matters because abnormal timing or force can interfere with the normal movement of luminal contents, making the muscle layer relevant when evaluating impaired gastrointestinal motility.
Peristalsis and segmentation represent different movement patterns generated by coordinated muscular activity. Peristalsis supports forward movement through the tract, whereas segmentation helps regulate and redistribute luminal contents. Controlled propulsion provides another way to manage transit. Distinguishing these patterns helps connect muscular activity with the specific movement or transport function being assessed.
Normal integrity and contractile function are important for maintaining effective transit through the gastrointestinal tract. If this layer is structurally disrupted or functionally impaired, movement of luminal contents may become abnormal, contributing to concerns such as impaired transit or obstruction. For this reason, assessment can address both the muscle layer itself and the movement pattern it generates.
It serves as an anatomical depth landmark when clinicians interpret biopsies, endoscopic ultrasound, and cross-sectional imaging. Determining whether a gastrointestinal tumor has reached or extended through this muscle layer helps characterize the depth of invasion. Its position within the wall therefore provides clinically useful context beyond identifying a lesion at the mucosal surface.
Biopsy interpretation, endoscopic ultrasound, and cross-sectional imaging can each contribute to assessment of the muscularis propria. These approaches help identify the layer's relationship to a lesion and support evaluation of how deeply a gastrointestinal tumor has invaded. They can also provide anatomical context when structural abnormalities or wall involvement are being considered.
The muscularis propria becomes especially relevant when symptoms or findings raise concern about motility, obstruction, or impaired transit. Its function generates the force needed to move and regulate luminal contents, while its integrity provides an anatomical basis for interpretation. Considering both structure and contractile role can help relate an observed problem to gastrointestinal wall function.
The muscularis propria is present in the walls of both the gastrointestinal and urinary tracts, where smooth-muscle activity generates force for movement of luminal contents. In the urinary tract, recognizing this layer extends its relevance beyond gastrointestinal imaging and pathology. Its integrity and function remain important anatomical and functional considerations when assessing tract-wall abnormalities.