Certified Biomedical Equipment Technician (CBET) Practice Exam 2025 - Free Biomedical Equipment Technician Practice Questions and Study Guide

The rhythmic contractions that move food through the digestive tract are defined as peristalsis. This is an essential process that occurs in the muscular walls of the gastrointestinal (GI) tract and involves coordinated waves of muscle contractions. These contractions facilitate the movement of food from the esophagus through the stomach, small intestine, and large intestine, ensuring that it is efficiently processed and eventually expelled from the body.

Understanding peristalsis is crucial for various biomedical contexts, particularly concerning the functioning of various medical devices that interact with the digestive system. Digestion refers to the biochemical breakdown of food into smaller components, which is a different process that occurs after food has been moved by peristalsis. Deglutition, or swallowing, is the process of moving food from the mouth to the esophagus, while mastication is the act of chewing food to break it down into smaller pieces before swallowing. Each of these processes is important in the overall digestive function, but peristalsis specifically emphasizes the rhythmic movement of food along the tract.