The stomach: its location, functions, structure in humans, possible pathology
The human stomach is use an extension of the digestive tract. There, in this bag, and the accumulation of food after it has passed the esophagus. In the stomach also pass the first stage of digestion of food. Here all solid part become liquid or mushy.
Perhaps we are all a little bit, but touched on in school for a subject as anatomy and considered in textbooks photo the stomach. But don't we all remember even where he is, and how it looks. And what is his pyloric division of the remember.
Anatomy has always interested man. At all times people wanted to know what's inside them, how they work the digestive organs. Now the pupils have a great opportunity to study such a subject as anatomy, learn about his stomach almost everything to learn how to "understand", because of the health of this organ of the digestive tract depends largely on the health of the whole organism.
The structure of the stomach is an interesting topic, as the process of digesting food. The body has front and back walls. The edge that was concave upward and to the right is called the small curvature. The other convex pointing down and to the left is called the big curvature. On the lesser curvature closer to the output end of the stomach, there is a clipping: there are two areas of lesser curvature to converge at an acute angle.
Interestingly, the structure of the stomach in humans, can be compared with the stomach of the dog. From other animals often this body has a form just an extended intestine. In textbooks of biology for high school students is like a photo-comparison.
The human stomach is also divided into departments, which doctors have identified only two:
- cardiac or fundic.
- pyloric or antral Department of a stomach or privratnikovym
The first of them consists of a fundus and cardiac region. The second region of the antrum and pylorus, and also, there is the pyloric canal. The divisions of the stomach of all people are often approximately the same.
Of course, that we are all different and the body for the accumulation and digestion each has its own characteristics. Form depends on many factors:
- muscle tissue;
- the total quantity of food eaten;
- the position of the body.
The form may be different, but the functions of each are the same. It is also worth adding that the stomach consists of three layers: mucous, muscular and external. Inside this body is covered by epithelial cells, enzymes, glands, mucus.
Its surface is – as much of the folded fabric. In the stomach also hasadditional tissue – submucosa. All of this can be seen in numerous photos taken during diagnosis.
Weight of the stomach in an adult is approximately 150 grams, the male organ is somewhat larger than in women. Over time, it can hold about 1.5-2 liters of water and food. It is interesting that it may slightly expand.
Especially in children
With regard to the child's stomach, his form is unstable. Things change very quickly depending on the age, body Constitution of the child's mode of food intake and other factors. In newborns, this body is round and capable of taking up to 30-35 ml of liquid food. Only to 12 months of life crumbs he begins to stretch in length and gets an oblong shape. Also interesting is the fact that until the baby is more time in a horizontal position, his stomach, too, "lies", and when the baby begins to walk, then this internal organ also becomes vertical.
When the child is already a year or more, he is capable of one meal to eat for about 300 ml. To 7-year-old age-stomach the child has the same shape as that of an adult, and capable of per meal make approximately 1 liter of food and beverages.
Gastric juice and acidity
In a healthy person the gastric juice is a colorless, nearly odorless, and contains a lot of mucus. The main component of salt and acid, it has enzymes, mucus and bicarbonate. Interesting is the fact that in 24 hours the average person produces about 2 liters of gastric juice.
Most on the acidity of the body the digestive system is affected by salt acid. It is produced by the parietal cells fundalini glands, most of which are located in the area of the body and fundus of the stomach.
If you measure the acidity on an empty stomach, the result should be 1.5-2 pH. But in a healthy person, this rate may be different and varies during the day. The only correct method of measuring acidity is the intragastric pH-metry. What does it mean?
The doctor takes special devices – altogetheri equipped with pH probes and several sensors to measure the acidity simultaneously in different zones. If you take pictures from the monitor screen when you experiment, it is seen that changes in acidity are cyclical and vary the meals during the day.
Human anatomy is very interesting and has not studied science. There are many photos of the stomach from the inside, but to understand something without explanation competent expert for them. What to speak of diseases of this organ and itstreatment.
Ulcer and gastritis
For example, for a long time, even the most experienced professionals could not understand what is the real cause of this unpleasant disease of the stomach and 12 duodenal ulcer. Only recently it became clear that this bacterium Helicobacter Pylori. It became known also that the bacteria enters the body is very simple – with unwashed hands, food and kissing. Ulcer and gastritis is the cause of her life. Some time the bacteria is in the stomach and doesn't manifest itself, and by reducing the immunity starts its activities.
Sometimes, the stomach ache and the reason the patient doesn't know. Then no harm will be tested for the presence of gastritis. To do this, use a probe that is placed into the stomach so the specialist can take a photo and determine if the disease.
The cause of ulcer can be called reduced immunity due to malnutrition, stress, overwork. Today there are a lot of photos, which shows how looks this bacterium, in what Department of a stomach it is painted treatments.
There is such a disease, as stenosis of the output division of stomach. Diagnosed when there is scarring the initial division of the bulb 12 duodenal ulcer from the ulcer. To determine the disease and to study the human stomach, you also need to take a picture with the help of special devices. Treatment prognosis is favorable with timely medical assistance.
Thus, the human anatomy and particularly the anatomy of the stomach – was very interesting. Much is already known to man, but something still remains to be fully explored.