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The oesophagus is the first part of the alimentary tract after the oropharynx. The cardio-oesophageal junction is the point where the oesophagus meets the stomach (at it's cardiac end - meaning the part of the stomach closer to the heart), where there is a circumferential thickening of the muscles in the wall of the gastrointestinal tract (tube). This extra thickening in the muscle layer is called the cardio-oesophageal sphincter. When food swallowed reaches this part, the sphincter dilates (expands/opens) to allow food to pass through from the oesophagus to the stomach. Once the food passes, the sphincter contracts (narrows/closes down) to prevent the contents of the stomach from returning back to the oesophagus.
Regurgitation of stomach contents and resultant vomiting occurs when the functioning of this sphincter becomes defective.
What else can I help you with?
Involuntary phase of swallowing?
cardioesophageal
What is the definition of cardioesophageal?
"Cardioesophageal" does not have a recognized standard definition. It could be a typographical error or a term specific to a particular context or publication. Further details or context would be needed to provide a more accurate explanation.
What is the Gatekeeper of the small intestine?
The pyloric sphincter , is the "Gatekeeper" reulater of the small intestine
Does the tonic contracture of the cardioesophageal sphincter prevent the leakage of stomach acid into the esophagus?
Yes. That is true.
Is cardioesophageal and gastroesophageal same thing?
No. Cardio- = heart Gastro- = stomach Esophageal = of or pertaining to the esophagus Edit- Yes. The Lower Esophageal Sphincter (LES) is also referred to as the Cardioesophageal Sphincter and the Gastroesophageal Sphincter. This sphincter separates the esophagus from the stomach and is usually in a closed position. When there is weakness in the sphincter gastric juices may go up into the esophagus resulting in heartburn.
What is the tube that connects to the stomach?
The cardiac sphincter connects the esophagus to the stomach.
What sphincter that opens when food or fluids exert pressure on it?
The sphincter that opens when food or fluids exert pressure on it is the gastroesophageal sphincter. Closure of the sphincter is under the control of the vagus nerve.
Sphincter that opens when food or fluid exert pressure on it?
Lower esophageal sphincter is the sphincter that opens when food or fluid exert pressure on it. It is located at the junction of the esophagus and stomach, allowing food to enter the stomach after swallowing.
How does food get from the mouth to the stomach?
It is chewed and mixed with saliva, then swallowed into the esophagus and called a bolus. Then muscle contractions called peristaltic action propel it down. When it gets to the cardioesophageal sphincter, it opens up and allows the bolus (food and saliva mixture) to enter the stomach.
Keep the contents of the stomach contained?
There is a lower esophageal (cardioesophageal) sphincter which prevents food from backing up into the esophagus, excepting in cases of GERD (gastroesohphageal reflux disorder). At the other end of the stomach there is the pyloric sphincter which regulates the rate at which the stomach contents are emptied.
The stomach sphincter that keeps food from reentering the esophagus when the stomach contracts is known as the?
It is known as the lower esophageal sphincter or sometimes the cardioesophageal sphincter.
What is the sequence of organs in the gastrointestinal tract?
The Organs in the Gastrointestinal System, in sequence, are the mouth, salivary glands, pharynx, and esophagus (Ingestion); followed by the stomach, small intestine, and large intestine (absorption); and finally the rectal area (excretion).
