MeSH definition : A thin-walled distention of the alimentary tract protruding just outside the body
cavity in the distal end of the neck (esophagus), used for the temporary storage of
food and water.;
A thin-walled distention of the alimentary tract protruding just outside the body
cavity in the distal end of the neck (esophagus), used for the temporary storage of
food and water.