What is the antral part of the stomach?
The antrum, the lowermost part of the stomach, is somewhat funnel-shaped, with its wide end joining the lower part of the body and its narrow end connecting with the pyloric canal, which empties into the duodenum (the upper division of the small intestine).
What is pyloric antrum?
The pyloric antrum is the lower or distal portion above the duodenum. The opening between the stomach and the small intestine is the pylorus, and the very powerful sphincter, which regulates the passage of chyme into the duodenum, is called the pyloric sphincter.
What is the function of the pyloric sphincter?
The main functions of the pylorus are to prevent intestinal contents from reentering the stomach when the small intestine contracts and to limit the passage of large food particles or undigested material into the intestine.
How large is the cardia?
Definition/Background The gastric cardia is a narrow, 3 cm long, transitional zone between the nonkeratinizing squamous epithelium of the esophagus and the fundic type of mucosa of the stomach.
What happens when the pyloric sphincter stays open?
When the pyloric valve doesn’t work properly, food stays in the stomach, and symptoms such as bloating, nausea, vomiting, reflux can occur. Eventually, if food can not get absorbed, weight loss occurs. Sometimes it is life-threatening.
What is the pyloric canal?
pyloric canal. The cavity inside constricted region of the pyloric segment of the stomach that opens through the pyloric sphincter into the duodenum.
What does the pyloric mean?
The pylorus ( /paɪˈlɔːrəs/ or /pɪˈloʊrəs/ ), 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 pyloric canal ends as the pyloric orifice,…
What is pyloric stenosis?
Pyloric stenosis refers to a pylorus that is narrow. This is due to congenital hypertrophy of the pyloric sphincter. The lumen of the pylorus is narrower, and less food is able to pass through. This problem is often detected in the early weeks of life.
What are the two parts of the pylorus?
Pylorus. 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 pyloric canal ends as the pyloric orifice, which marks the junction between the stomach and the duodenum. The orifice is surrounded by a sphincter, a band of muscle,…