What is the role of peristalsis in the digestive system?

The role of peristalsis in the digestive system is that it is the way the food is driven by the esophagus and the stomach; Then the peristalsis moves the fissioned food with a small and large intestine and then through the rectum and rectum. These are a number of contractions of smooth muscles and relaxation moving with food in a similar way through various processes in the gastrointestinal tract.

The movement of peristalsis in the digestive system relies on two main reflexes that are withdrawn over food that has been swallowed or bolus, and relax under it. This occurs in the enteric nervous system, which is a local nervous system containing the digestive system. There are two neuron networks in the wall of the digestive tract and they start at the esophagus and end up in the rectum. There are three types of neurons in the enteric nervous system that exclude neurotransmitters, and among them are responsible sensory, motor and intercourse responsible in the digestive system.

6 The food is chewed in the bolus or the ball and swallows. It passes through the esophagus of the primary peristaltic wave, which forces food through the esophagus and into the stomach; A process that lasts about nine seconds. If the food is poorly lubricated and slowly moving through the esophagus, then the secondary peristaltic wave continues to work around the bolus until it enters the stomach. Once the bolus turns into milk, we can catch the stomach and transmit to the small intestine, the process of peristalsis in the digestive system slows down as the purpose changes from movement to mixing, digestion and absorption.

Nutrition absorption takes place in the small intestine, where peristalsis moves around, gives it the opportunity to be absorbed by the walls of the intestine and into the bloodstream. Another phase of the digestive process takes place in the large intestine, where water is regenerated from undigested food and absorbed into the bloodstream. The residues are then secreted by the rectum.

it was estimated that typical food would take about five hours to go through the stomach and up to 40 hoursIn, before traveling with a large intestine with complete exclusion from the body, it sometimes lasts several days depending on food. Peristaltiza in the digestive system works at different speeds because the process in different stages has different goals. The aim in the esophagus is primarily to stop swallowing food again entering the mouth to make the process faster. Finally, the aim of the large intestine is to absorb as much water from the undigested matter as possible to make this process much more slow.