What is peristalsis?

Peristalsis is a coordinated rhythmic contraction and relaxation of muscles in the gastrointestinal tract, which helps to propel food and other contents through the digestive system. This process occurs involuntarily and is controlled by the enteric nervous system, which is sometimes referred to as the "second brain" due to its complexity and autonomy.

The waves of peristalsis move in a sequential manner, pushing the food forward from one section of the digestive tract to the next. This movement allows for the mixing of food with digestive enzymes and facilitates the absorption of nutrients along the intestinal lining. Peristalsis is essential for the proper functioning of the digestive system and for maintaining regular bowel movements.