How do our bodies swallow foods/liquids when upside down without it coming back up

Question

How do our bodies swallow foods/liquids when upside down without it coming back up

In: 1

Answer 1

Imagine the inside of your body squishing stuff down like how the outside of a slug slithers along the ground. That action is called peristalsis. Swallowing stuff and pushing stuff out from your butt are very similar movements. When you puke, you do as a slug would walk backwards on the inside.