Digestive system - the basis of smooth running of the human body

Date:

2018-03-17 22:35:21

Views:

595

Rating:

1Like 0Dislike

Share:

Table of contents:

Digestive system provides the human activity through the delivery of necessary nutrients used as energy source and building material. These substances enter the body through the digestive tract whose total length is about 10 meters and having throughout the extension of the cavity and constriction.

The Structure of the human digestive system includes: mouth, pharynx, esophagus, stomach, pancreas, liver, gall bladder, large intestine and small intestine.

The Oral cavity. In this part of the digestive system is directly testing foods, exposure to chemical and physical effects. The chewing of food refers to the second type of impact, and from this initial phase of the system depends on the quality of the receipt and assimilation of nutrients. No wonder, many experts suggest as carefully as possible to chew food which is then under the influence of saliva is formed in a lump of food.

Saliva occupies a rather important role in the process of digestion. It almost entirely consists of water (about 99 %). It contained mucin protein contributes to adhesiveness, the presence of lysozyme provides disinfection of food, and such enzymes as amylase and maltase to break down nutrients.

Anatomy of the digestive system indicates that the next on the oral cavity is the pharynx which is a muscular organ with defined holes (mouth, nasal inputs, the inputs to the esophagus and larynx, and two tubes from the middle ear). Avoid getting food in the way of breathing, the entrance to the larynx is covered by epiglottis.

Recommended

"Knowledge is light and ignorance is darkness": the value, meaning and alternatives

There are some sayings that would seem to need no explanation, such as “teaching & ndash; light and ignorance – darkness”. But some still do not understand their meaning. But not only for such people is written by our article. I...

What was invented by Mendeleev for the army. The history and fate of the invention

What was invented by Mendeleev for the army. The history and fate of the invention

D. I. Mendeleev was a brilliant Russian scientist-polymath, who made many important discoveries in various fields of science and technology. Many people know that he is the author of “Fundamentals of chemistry" and the periodic law of chem...

The origin of the Slavs. The influence of different cultures

The origin of the Slavs. The influence of different cultures

Slavs (under this name), according to some researchers, appeared in the story only in 6 century ad. However, the language of nationality bears the archaic features of the Indo-European community. This, in turn, suggests that the origin of the Slavs h...

The process of swallowing food is due to the contraction of the muscles of the pharynx, through which it enters the esophagus and then through the aperture – into the stomach. Because the esophagus-this muscular tube, through the reduction of these muscles the food is pushed on.

Digestive system includes the stomach, which is located under the diaphragm in the upper part of the abdomen. Nature it there are two openings-the inlet and outlet. The second closes quite strong sphincter muscle (the sphincter). Food delayed in the stomach for a long time (up to 11 hours), where it undergoes a chemical action of the gastric juice is a colorless liquid, containing hydrochloric acid. It is through this component is used for the digestive function. Acid is also destructive influences within the human body bacteria. Therefore, the occurrence of diseases of the gastrointestinal tract appears the risk of Contracting infectious diseases that are transmitted through the digestive system.

Received chyme from the stomach portions through the sphincter gradually enters the intestines. The small intestine begins with the duodenum, into which open the common bile duct and pancreatic duct. Here is the completed digestion under the action of the pancreatic juice and bile.

From the small intestine processed food gradually passes into the colon, which has a length of 2 meters. Here intensively absorbed water and the remnants of junk food are already eliminated from the body. Due to the large number of different bacteria in the intestine, improves digestion. However, there are negative aspects. Thus, under the action of these microorganisms is the destruction of unnecessary food, and toxic compounds for elimination of which the liver is responsible.

Digestive system takes the liver one of the dominant roles. After all, it is the biggest gland of digestion, through which passes and is cleaned all venous blood from stomach, spleen and intestines.

So, digestive system – is a complex system of food processing in the human body each organ of which have a role to play, and if it fails at least one component of this mechanism can develop diseases of the gastrointestinal tract.


Article in other languages:

AR: https://tostpost.com/ar/cars/7586-what-is-the-exam-in-the-traffic-police.html

BE: https://tostpost.com/be/a-tamab-l/13550-shto-zh-uya-lyae-saboy-ekzamen-u-d-bdr.html

DE: https://tostpost.com/de/autos/13553-was-ist-eine-pr-fung-in-der-verkehrspolizei.html

ES: https://tostpost.com/es/coches/13560-que-es-un-examen-en-el-gbdd.html

HI: https://tostpost.com/hi/cars/7592-what-is-the-exam-in-the-traffic-police.html

JA: https://tostpost.com/ja/cars/7588-what-is-the-exam-in-the-traffic-police.html

KK: https://tostpost.com/kk/avtomobil-der/13553-b-l-b-ld-red-emtihan-gibdd.html

PL: https://tostpost.com/pl/samochody/13540-co-to-jest-egzamin-do-policji.html

PT: https://tostpost.com/pt/carros/13534-o-que-um-exame-de-pol-cia-de-tr-nsito.html

TR: https://tostpost.com/tr/arabalar/13556-nedir-bu-s-nav-traf-k-polisi.html

UK: https://tostpost.com/uk/avtomob-l/13550-scho-zh-yavlya-soboyu-spit-v-gibdd.html

ZH: https://tostpost.com/zh/cars/8252-what-is-the-exam-in-the-traffic-police.html






Alin Trodden - author of the article, editor
"Hi, I'm Alin Trodden. I write texts, read books, and look for impressions. And I'm not bad at telling you about it. I am always happy to participate in interesting projects."

Comments (0)

This article has no comment, be the first!

Add comment

Related News

Aluminium oxide

Aluminium oxide

Aluminum oxide is found in the natural environment in the form of an ordinary alumina, its chemical formula is AL2O3. This is crystal, not having a color temperature in 2044°C begins to melt, and when it reaches the level of 3...

The meaning of the idiom

The meaning of the idiom "loose tongue": to understand together

Read A. Pisemsky “Troubled sea”: “the Language that you have, apparently, no bones, just so, and bend to every word…” who or what says the writer? The meaning of the idiom “mouth” will he...

The year 1687. The Slavonic-Greek-Latin Academy: history, description, and interesting facts

The year 1687. The Slavonic-Greek-Latin Academy: history, description, and interesting facts

the Slavonic-Greek-Latin Academy (1687) was the first higher educational institution in Russia. It was established in Moscow and existed until 1814, we next Consider what was the Greek-Slavic-Latin Academy. Historyas the initiator...

Pierre de Fermat: biography, photos, discoveries in mathematics

Pierre de Fermat: biography, photos, discoveries in mathematics

Pierre de Fermat-one of the greatest scientists in the history of France. His achievements include the creation of such works as theory of probability and numbers, he is the author of outstanding theorems, and discoverer of a numb...

Modern educational technology: features

Modern educational technology: features

Innovative educational technologies are very popular clichés of modern Russian reality. In practice, the vast majority of today's schools appear Intrusive ideas that the school uses the best, most advanced training methods which w...

Social partnership in education: examples

Social partnership in education: examples

Education as a social institution plays an important role in the process of human socialization. It is responsible for the timely and adequate preparation of the individual to full life in society. To understand the essence and sp...