nadiiag posted: " Photo by JESHOOTS.com from Pexels Our digestive system begins with the mouth, where we chew food, processing it with saliva. Then it enters the esophagus in portions - a hollow tubular organ that connects to the upper part of the stomac"
Our digestive system begins with the mouth, where we chew food, processing it with saliva. Then it enters the esophagus in portions - a hollow tubular organ that connects to the upper part of the stomach. The walls of the esophagus are muscular, this is necessary so that food is rhythmically pushed down, from the inside it is covered with a mucous membrane, a layer of cells that protect against irritants. There is a sphincter between the esophagus and the stomach, this is a section of circular muscles that relax in a timely manner when food passes from the esophagus and must be closed when the stomach digests food, processing it with hydrochloric acid and pepsin (the main components of gastric juice). If the tone of the lower esophageal sphincter is disturbed (reduced) or the stomach stretches too much, the opening opens slightly, and the contents, along with the acid, are thrown back into the esophagus - this is called reflux. The mucous membrane of the esophagus, in contrast to the stomach, is not protected from the effects of acid, and when casting, we feel heartburn. If heartburn occurs frequently, the esophagus is damaged, inflamed, and GERD occurs, which means gastroesophageal reflux disease.
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