Pyloric Antrum
Pyloric Antrum - Related Videos
01:11
Pyloric Obstruction
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2026
Pyloric obstruction, also referred to as gastric outlet obstruction, is a condition characterized by narrowing or blockage at the pylorus—the muscular valve regulating the flow of stomach contents into the duodenum. When this passage becomes impaired, the stomach cannot effectively empty its contents into the small intestine. This disruption leads to a range of gastrointestinal symptoms, including early satiety, bloating, epigastric pain, postprandial nausea, persistent vomiting, and...
04:18
Enhanced Spatial Mapping of Mouse Gastric Muscle Layers Using a Modified Swiss Roll Technique
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2025
This protocol outlines a whole-stomach immunostaining method modified from the "Swiss roll" technique originally developed for the murine intestine.
11:03
Direct Pressure Monitoring Accurately Predicts Pulmonary Vein Occlusion During Cryoballoon Ablation
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Cited by 18 •
2013
Effective pulmonary vein isolation utilizing a cryoballoon depends on complete pulmonary vein occlusion. The point of occlusion can be effectively predicted by direct analysis of pulmonary vein pressure waveform analysis during balloon inflation using a simple and reproducible technique.
08:22
The Application of Point-of-Care Ultrasonography (POCUS) in the Management of Acute Respiratory Distress Syndrome (ARDS) in the Intensive Care Unit
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2025
Here, we present a protocol for bedside POCUS application in ARDS management within the ICU. It details standardized techniques for lung, cardiac, diaphragm, venous, and gastric assessments to guide ventilation, predict weaning, and prevent complications.
06:04
Ex Vivo Intestinal Sacs to Assess Mucosal Permeability in Models of Gastrointestinal Disease
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Cited by 41 •
2016
This protocol describes the use of excised intestinal tissue preparations or "intestinal sacs" as an ex vivo model of intestinal barrier function. This model may be used to assess integrity of both the epithelial barrier and the mucous gel layer at specific intestinal sites in animal models of digestive disease.
FAQs
Rhythmic contractions repeatedly compress and mix partially digested material against the muscular wall. This action helps break down solid particles and incorporates them into a more uniform chyme before movement toward the pyloric canal. The strength and timing of these contractions therefore influence how effectively stomach contents are prepared for regulated passage into the small intestine.
The antrum generates movements that drive chyme toward the pyloric canal, while the pyloric sphincter controls entry into the duodenum. Their coordination prevents uncontrolled emptying and links mechanical processing with intestinal delivery. Studying this relationship helps explain how gastric emptying is regulated and why abnormalities affecting pyloric outflow can disrupt digestion.
Endocrine cells in the antrum release gastrin, a hormone that supports gastric secretion and motility. This provides a chemical means of influencing the stomach alongside the antrum’s mechanical contractions. Gastrin is therefore relevant when examining how hormonal signals contribute to the preparation and movement of gastric contents during digestion.
Grinding reduces the size of solid particles within partially digested food and combines them with the surrounding gastric contents. The resulting chyme can then be directed toward the pyloric canal for controlled passage. This mechanical step connects the antrum’s muscular activity with the transition from stomach processing to delivery into the duodenum.
The pyloric antrum provides a site where mixing, particle grinding, propulsion, hormonal signaling, and outlet control can be considered together. These functions make it useful for understanding how stomach contents reach the small intestine in a regulated manner. Biology studies of gastric emptying can therefore relate antral activity to the timing and effectiveness of intestinal delivery.
Changes affecting antral contractions, gastrin-related activity, or passage through the pyloric outlet may alter gastric emptying and digestion. The region is consequently relevant to investigations of gastroparesis, peptic ulcer disease, and other abnormalities affecting pyloric outflow. Examining these conditions helps connect altered structure or function with disrupted movement of gastric contents.