What is a gut?
The intestine, and more correctly the "intestine" - is one of the components of the gastrointestinal tract (GIT), where food digestion occurs, as well as absorption of nutrients, the production of certain hormones. The intestine is located in the abdominal cavity and consists of several sections.
The structure of the intestine and its functions are described in detail below in the article.
The structure of the intestine and its functions
In the intestine can be divided into two segments: the colon and small. Each of these parts has its own structure.
What is the colon? This name has the lower part of the intestine (about 1.5 m long), which is responsible for the absorption of water and the formation of feces from food debris that the body has processed, highlighting everything necessary for life. The name “thick” is dictated by the features of this part of the intestine - the lumen of its internal cavity is wider (on average, from 4 to 8-10 cm) than in the so-called “small intestine”, and the large intestine has more dense connective and muscular layers.
In turn, the large intestine is divided into the following sections:
- Cecum. A kind of connecting link between the small intestine and thick. Prevents food from entering the colon into the upper sections.
- Colon. It comes immediately after the blind and is a key part of the large intestine. The colon absorbs a lot of water and electrolytes, contributes to the formation of more dense stool masses from the still soft food "waste".
- Rectum. This name is often heard, and therefore many may be interested in what the rectum is. It represents the end of the large intestine, forming the anus.
Now let's talk about what is the small intestine. This is a section of the intestine, which is located between the colon and the stomach and is responsible for the digestion of food that has already passed the preliminary "treatment" in the stomach. The length of this segment is about 2-4 m, and the width of the inner lumen varies from 3 to 5 cm.
The small intestine is also divided into sections:
- This is the duodenum. The very first segment going behind the stomach. It begins the process of intestinal digestion.The name comes from the length - about 12 times laid across the "finger" (i.e. finger).
- Jejunum. Participates in digestion.
- Ileum. Also performs its functions in the process of digestion.