Retroperistalsis

Retroperistalsis (pronunciation: /ˌrɛtroʊˌpɛrɪˈstɔːlsɪs/) is a physiological process that involves the reverse movement of digestive contents in the gastrointestinal tract (GIT).

Etymology

The term "retroperistalsis" is derived from the Greek words "retro" meaning backward, and "peristalsis" which refers to the involuntary constriction and relaxation of the muscles of the intestine or another canal, creating wave-like movements that push the contents of the canal forward.

Definition

Retroperistalsis is a reverse peristaltic action, meaning that it moves material in the opposite direction to the normal peristalsis movement. This process is most commonly associated with the act of vomiting, where the stomach contents are expelled through the mouth. However, it can also occur in other parts of the GIT, such as the esophagus and small intestine, under certain conditions.

Related Terms

Peristalsis: The normal, rhythmic, wave-like contractions of the GIT that move food and other contents along the digestive tract.
Vomiting: The forceful expulsion of the contents of one's stomach through the mouth, often caused by retroperistalsis.
Gastrointestinal tract: The series of hollow organs joined in a long, twisting tube from the mouth to the anus, including the esophagus, stomach, and intestines.
Esophagus: The muscular tube connecting the throat (pharynx) with the stomach.
Small intestine: The part of the GIT between the stomach and the large intestine, where most of the end absorption of food takes place.

External links

Medical encyclopedia article on Retroperistalsis
Wikipedia's article - Retroperistalsis

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Retroperistalsis