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.
Pharyngeal-esophageal
The cardiac sphincter connects the esophagus to the stomach.
Sphincter of Oddi.
the sphincter muscles are unable to keep the bladder closed (intrinsic sphincter deficiency, ISD).
The internal urethral sphincter an involuntary sphincter that keeps the urethra closed when urine is not being used. The external urethral sphincter is fashioned by skeletal muscles as the urethra passes thorugh the pelvic floor.This sphincter is voluntary controlled.
The pyloric sphincter , is the "Gatekeeper" reulater of the small intestine
Pharyngeal-esophageal
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.
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.
Yes. That is true.
The cardiac sphincter connects the esophagus to the stomach.
It is known as the lower esophageal sphincter or sometimes the cardioesophageal sphincter.
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.
A burning sensation in the esophagus is clinically known as gastroesophageal reflux disease, or GERD. It can occur because of a weak cardioesophageal sphincter muscle or a hiatal hernia, or both.
cardioesophageal
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.
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).