peristalsis
/,peri'stælsis/
Definition
- Noun:
- The process of wavelike muscle contractions of the alimentary tract that moves food along: A series of involuntary, coordinated muscular contractions and relaxations that propel contents through tubular structures in the body, especially the digestive system.
Usage
- Noun: The term "peristalsis" is used exclusively as a noun in biological and medical contexts to describe the automatic, wave-like motion of smooth muscles in hollow organs. It is a non-count noun, typically used without a plural form.
Examples
- Noun:
- Digestion relies on peristalsis to move food from the esophagus to the stomach.
- A blockage can occur if peristalsis is too weak.
- The doctor explained that the pain was related to irregular peristalsis in the intestines.
Advanced Usage
- "Reverse peristalsis" or "retroperistalsis": A backward wave of contractions, which can lead to vomiting.
- Food poisoning can sometimes trigger reverse peristalsis.
Variants and Related Words
- Peristaltic (adj): Relating to or characterized by peristalsis.
- The peristaltic movement is essential for swallowing.
Synonyms
- Vermiculation (a less common, more technical synonym).
- Rhythmic contraction.
Antonyms
- Atony: Lack of normal muscle tone or strength.
- Paralysis: Loss of the ability to move muscles.
Noun
-
the process of wavelike muscle contractions of the alimentary tract that moves food along
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