Question

What is non directional peristalsis

Answer 1

During vomiting, the propulsion of food up the oesophagus and out the mouth comes from contraction of the abdominal muscles; peristalsis does not reverse in the esophagus.

Answer 2

EXPLANATION:  

Non-directional peristalsis is a condition in which the events happen opposite to the direction of peristalsis, for example vomiting is an action of non-directional peristalsis in which food comes in the opposite direction from where it has to reach.  

The peristalsis is an action that takes place due to contraction and relaxation of muscles that makes an entity to flow in down a tube or a pathway. This happens because of opposite direction of ‘muscle contraction’ and ‘relaxation’ that takes place in the oesophagus.