General

Stomach



Stomach: Important in Digestion

Introduction (what it is)

The stomach is an extension of the digestive tract located between the esophagus and the small intestine. Located on the left side of the abdomen, in its walls are the tunics: mucosa, submucosa, muscle and serosa.

Knowing the human stomach

The stomach wall has a structure similar to other parts of the digestive system, with the exception that in this organ there is an extra oblique layer of smooth muscle inside a striated muscle layer, which aids in digestion movements.

When empty, the stomach remains contracted with wrinkled mucosa and submucosa. As soon as it is distended by food, the state of its mucosa and submucosa changes from rough to smooth.

Inside this important organ, there are holes that have glands that act releasing secretions that are indispensable to the digestive process.

Among the various types of glands that act on the digestive process are mucus glands (responsible for lubricating the gastric walls) and pepsin glands (responsible for producing gastric mucus). The latter has as its main function to metabolize proteins and lactose.

In general, it is important to understand that there are three different active principles found within gastric juice, namely: hydrochloric acid, pepsin and lab-yeast.

Did you know?

Gastroenterology is the medical specialty that studies and deals with problems related to the digestive system, including the stomach.