esophagal sphinter is a sphincter is actullal found there end of esophagous,
Cardiac sphincter, due it being close to the heart.
schlosky
cricopharyngeal sphincter
LES - Lower Esophageal Sphincter
The lower esophageal sphincter must open to permit vomiting.
lower esophageal sphincter.
duodenal
cricopharyngeal sphincter
at the junction of the esophagus and stomachlower-esophageal-sphincter
LES - Lower Esophageal Sphincter
The name of the sphincter between the esophagus and the stomach is called the LES, or lower esophageal sphincter.
The lower esophageal sphincter must open to permit vomiting.
cardiac sphincter; or gastroesophageal sphincter; or lower esophageal sphincter (LES); or esophageal sphincter from http://en.wikipedia.org/wiki/Cardia
cardiac sphincter/lower esophageal sphincter (LES)
The lower esophageal sphincter which is part of the esophagus.
lower esophageal sphincter.
Esophageal, duodenal, urethral, and anal would all seem to fit that description.
During peristalsis, the esophageal sphincter allows the food bolus to pass into the stomach. It prevents chyme, a mixture of bolus, stomach acid, and digestive enzymes, from returning up the esophagus. An overly loose esophageal sphincter leads to heart burn because the stomach acid "burns" the esophagus. An overly tight esophageal sphincter is known as achalasia and leads to pain on swallowing, regurgitation of food, and cheat pain.
duodenal