Question

Which of the following leads to reverse peristalsis?

• A. Over ingestion of food
• B. Entry of toxic substances into the body
• C. Excess consumption of alcohol
• D. All the above

Answer 1

The correct option is D

All the above

Reverse peristalsis is nothing but vomiting and this happens whenever the gastrointestinal tract senses the presence of irritants or harmful organisms. First, the small intestine begins reverse peristalsis, moving the food back into the stomach. The pylorus of the stomach relaxes to receive this backflow of food. There is then a forceful expulsion of the gastric and duodenal contents up the esophagus and through the mouth. All this is coordinated by the brain itself, which has a dedicated vomit control centre.