What is the importance of the digestive system: important answers

In everyday life, people rarely pay attention to the digestive system, ignoring not only the signals of their body, but also the reasoning, without trying to figure out what the value of the digestive system is for well-being. Insufficient or excess amount of food, as well as its composition, all this affects one of the most important systems in the human body.

Digestion begins in the mouth

Trying to explain what the value of the digestive system is, one should immediately point out that the digestive process begins as soon as a piece of cake or Brussels sprouts get into the person's mouth. A large number of glands secreting saliva is located in the oral cavity. It is the saliva that protects the enamel of the teeth, ensuring the consistency of its composition. In addition, by washing the entire cavity, saliva provides disinfection, being a natural, though not strong, antibiotic. In the salivary glands a small amount of calcium is produced, which feeds the tooth enamel.

Here it is necessary to say that saliva is produced only in the daytime, which means that at night bacteria can increase their population. That is why cleaning of teeth is so important - evening and morning.

Esophagus and intestinal tube

The chewed food, fermentation and digestion of which has already begun in the oral cavity, after ingestion enters the esophagus. The diameter of this tube is about 2 centimeters.

From the esophagus food lump gets into the stomach, which has a fancy shape of a bag with oblique seams. It is located diagonally from left to right, while the left side is much higher than the right.

Immediately after the stomach begins a small intestine, in disorder located in the abdominal cavity. The length of this organ reaches seven meters. It is in the small intestine that the most important thing happens - the assimilation of all the useful elements that a person absorbs. In addition to its amazing length, it also has a huge area. After all, every millimeter of the intestine is covered with thin villi, in which the exchange of substances takes place. If all these villi straightened, then the intestine would increase in length by two and a half times. It is from the intestine that nutrients enter the bloodstream, because every villus contains a blood vessel. This brings us closer to understanding what the value of the digestive system is.

Biology: Grade 6

The upper intestine is sterile, while in the stomach and lower parts of the large intestine a large number of different types of bacteria that help digestion. Modern science is for certain that most of the immune system is concentrated in the stomach and the state of the microflora most directly affects human health.

Perhaps even a student should know the answer to the question that we are considering in this article. Namely: "What is the value of the digestive system?" (6th grade). The sixth-grader should have an idea of its structure, and also that this system is full of nerve endings, glands secreting enzymes and hormones, each of which is important for health.

What is the importance of the digestive system?

A brief answer to this question can be as follows. An integral part of the digestive system is the microorganisms that inhabit it in certain areas. They promote digestion, digestion and assimilation of minerals, proteins and carbohydrates. And some even produce vitamins. Thus, the main function of this system is the cleavage and digestion of nutrients.

Perhaps understanding what the value of the digestive system is, will contribute to a more caring attitude towards her, caring for her, and also helps you change eating habits by giving up harmful ones and following useful ones.