Stomach

This model demonstrates the structure of the stomach. The stomach is a hollow muscular organ, part of the digestive tract. The stomach serves as a reservoir for swallowed food, which is mixed in it and begins to be digested under the influence of gastric juice, which contains pepsin, chymosin, lipase, hydrochloric acid, mucus and other active compounds. The stomach consists of four membranes: serous, muscular, submucous and mucous. The muscular layer, in turn, has three layers: longitudinal, circular and oblique.