Eli5 How does food and liquids remain inside the stomach and not “leak out of your mouth” whilst being in space?

Question

Eli5 How does food and liquids remain inside the stomach and not “leak out of your mouth” whilst being in space?

In: 82

Answer 1

Literally, the same reason why you don’t shit yourself.

See the anus is a ring muscle, called sphincter, you have one of those at the entrance and exit of your stomach, and anotherone that separates the small and large intestines.