The pyloric sphincter is a band of smooth muscle that plays an important role in moving the contents of your stomach into your small intestine. The term has also been used to mean the pyloric part of the stomach, and the pyloric antrum, canal, opening, or sphincter. Pyloric Sphincter Definition. It is basically a strong ring of muscles which are used to control food movement from the stomach and into the intestines or more precisely the duodenum with is the first part of the small intestine. Just before the pyloric sphincter, it curves upwards to complete the J shape. The pyloric sphincter is a small piece of smooth visceral muscle that acts as a valve and regulates the flow of partially digested food from the stomach to the duodenum. The pylorus (/ p aɪ ˈ l ɔːr ə s / or / p ɪ ˈ l oʊ r ə s /), or pyloric part, connects the stomach to the duodenum.The pylorus is considered as having two parts, the pyloric antrum (opening to the body of the stomach) and the pyloric canal (opening to the duodenum). The muscular ring known as the Pyloric Sphincter has the ability to contract and relax. The pyloric valve or sphincter is placed right at the bottom end of the stomach. Gastric glands are mostly exocrine glands and are all located beneath the gastric pits within the gastric mucosa–the mucous membrane of the stomach. It thus allows food particles to pass to the duodenum from the stomach. pylorus [pi-lor´us] the distal aperture of the stomach, opening into the duodenum. Pyloric canal: This narrow, tubular portion of the stomach ends at the gastroduodenal junction. At the end of the opening between the stomach and the small intestine, there is a compact ring of smooth muscle or valve, called pyloric sphincter. Pyloric Sphincter Function. A ring of muscles, the pyloric sphincter, serves as a “gate,” closing the opening from the stomach to the intestine. The opening and closing of the sphincter is controlled by peristaltic waves produced by the stomach during the digestion process. The pylorus is located between the end of the stomach and the beginning of the duodenum or small intestine. The key difference between cardiac and pyloric sphincter is that cardiac sphincter is present at the upper portion of the stomach and closes off the top end of the stomach while pyloric sphincter is present at the lower end of the stomach and closes off the bottom of the stomach.. The internal surface of the pylorus is covered with a mucous-membrane lining that secretes gastric juices. It is found at the border of the stomach’s final segment, the pylorus, and the small intestine’s first segment, the duodenum. It is a muscular sac located between the … The pyloric canal ends as the pyloric orifice, which marks the junction between the stomach and the duodenum. Beneath the lining, circular muscle tissue allows the pyloric sphincter to open or close, permitting food to pass or be retained. Thickening of the lower region of the pyloric canal gives rise to this structure. The stomach is one of the organs of our digestive system. … The gastric mucosa is pitted with innumerable gastric pits which each house 3-5 gastric glands. The sympathetic nervous system manipulates the function of the pyloric sphincter. The stomach is divided into three regions: the fundus, the body, and the antrum. The pyloric sphincter is a thin, circular band of visceral muscle surrounding the pyloric opening at the inferior end of the stomach. Where the esophagus joins the stomach the anterior region angles acutely upwards, curves downwards forming the greater curvature then slightly upwards towards the pyloric sphincter.