Question

How does food moov in the opposite direction during vimiting?

Answer 1

It usually occurs as a precursor to vomiting. Local irritation of the stomach, such as bacteria or food poisoning, activates the emetic center of the brain which in turn signals an imminent vomiting reflex. Food then moves in the opposite direction, often from the duodenum into the stomach.

Answer 2

heya...
Due to muscular contraction is in the opposite upward side....
.hope helps you dear ...

thank you