New answers tagged human-anatomy
-1
There is nothing. The tissue compresses together.
The entire digestive tract, including the esophagus, is pressurized by muscles.
Gases do get produced by digestion (and disfunctionally by air swallowing) and those gases must be removed from the body.
A small amount of air and carbon dioxide can naturally exist in the stomach, but if this increases it will ...
Top 50 recent answers are included