Peristalsis.
Peristalsis.
the cardiac sphincter opens involuntarily during peristalsis, which is the process of wavelike muscle contractions of the alimentary tract that moves food along the oesophagus down to the stomach. :)
The lower esophageal sphincter must open to allow for vomiting. This sphincter is located at the junction of the esophagus and stomach, and its relaxation allows the contents of the stomach to be expelled back up through the esophagus.
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Sphincters are muscular valves found throughout the body used to open or close an opening. An example is the cardiac sphincter which prevents food from coming back up the esophagus after swallowing
1) The detrusor muscle must contract 2) The internal urethral sphincter must open 3)The external urethral sphincter must open
The pyloric sphincter opens in response to the presence of food in the stomach. This triggers a reflex that relaxes the sphincter, allowing food to pass into the small intestine. The sphincter closes to prevent the backflow of intestinal contents back into the stomach.
The pyloric sphincter opens in response to food entering the stomach. Stretch receptors in the stomach wall detect the food volume, signaling the sphincter to open and allow a controlled amount of chyme to pass into the small intestine for further digestion. Once the chyme has passed through, the sphincter closes to prevent backflow.
LES-Lower Esophageal Sphincter aka Cardiac Sphincter prevents stomach contents from entering the esophagus.UES-Upper Esphageal Sphincter- Reduces air entering the stomachPyloric Sphincter is found at the end of the stomach and control the release of food from the stomach to the small intestine.
sphincter
The sphincter of Oddi (hepatopancreatic sphincter), controls the release of pancreatic enzymes and bile into the duodenum. During digestion, intestinal phase signals stimulate the release of bile.
the arrival of the peristaltic wave at the stomach