Large intestine - an important part of the digestive system, where liquid is carried out absorption and creation of feces.The name of the large intestine - conditionally.So doctors call the lower part of the intestine, because its walls are more layers of connective tissue and muscle, and thus more compacted and thickened texture.Also, the inner diameter of the intestine divisions of the last space in the relaxed state is thicker than the upper.
- 1 What is colon
- 2 How does the work and the large intestine?
- 3 Diseases colon
- 4 Prevention of colon diseases
What is colon
colon walls are presented with 4 layers:
These layers provide a dense structure of the walls of the colon, the main task of which is the fluid absorption and the formation of feces.Colon assumed intestine from bauginievoy valve and ending the anus.The length of this section is on average 2 meters.
Bauginievaya valve is a kind of w
Once a person takes food that is literally within the first 5 min of peristalsis under the influence of the valve begins to open every 30-60 seconds, releasing the contents of the small intestine.Within 24 hours from the small intestine to the large shifts from 0.5 to 4 liters chyme.The large intestine is divided into the following sections:
- cecum with appendix.It is a small bag length 3-8,5 cm and 7 cm in diameter.Placed in the abdomen right under the bottom edge;
- colon, which in turn is divided into 4 sub-division, forming the perimeter of the large intestine:
- ascending colon (lat colon ascendens.);
- transverse colon (lat colon transversum.);
- descending colon (lat colon descendens;
- sigmoid colon (lat colon sigmoideum);
How does and works colon
Muscle fibers penetrating the intestinal wall, its contractile movements that contribute to the promotion of intestinal contents, which, as the suction of water is transformed into fecal. at this stage the weight of the intestine also breaks down proteins and synthesized vitamins, especially group B. of the total volume of alcohol consumed and eaten only the third part is removed from the body in the form of feces
main part of the large intestine -. colon, so named for being locatedperimeter peritoneum girding it.In this region of the intestine remains of food moving to the "exit".The diameter of the colon - 6-6.5 cm and its length is one and a half meters.It starts from the valve of the ileum and climbs vertically.This area is called the ascending colon.
about a liver, it is set to form the hepatic flexure, it passes into the transverse colon, which lies in the abdomen horizontally.Then, on the left side is set again to form the splenic flexure, moves in a downward transverse colon, fades into the sigmoid.The intestine ends rectum.Located colon from the back of the peritoneum and attached mesentery, which permeate the blood vessels.
Some medical theorists separate the rectum from the colon, considering it an independent body.The rectum is a form of ampoules, expanded at the top and tapering to the bottom.This narrowed part is called the anal canal, which ends with the anus.
intestinal muscles work reflexively, without submitting to the will of man.His contractile movements, pushing the intestinal contents, which, as the suction of water turns into a stool.Muscle contraction carried out 3-4 times a day.Intensity peristalsis promote foods fortified with fiber.
In this region of the intestine finally cleaved protein and synthesized vitamins, especially group B. From inside the colon wall covers the mucous membrane, which facilitates the movement of food and protecting the intestinal wall by the chemical action of enzymes.
of the total volume of alcohol consumed and eaten only a third of the excreted from the body in the form of feces.
large intestine, as well as other departmentsdigestive system diseases susceptible.Although he is deprived of physiologically active complex functions, and is not associated with endocrine and immune systems.Lower intestine is exposed to the following pathologies:
- motor function of the intestine,
- digestion and absorption,
dysmotility - is inherently intestinal peristalsis.Needless active motility reduces the residence time of feces in the large intestine, as a result, the water does not have time to be absorbed.The result is diarrhea, loose stools.Weak contrast motility, stool excretion delays from the body, causing it to dehydration and, eventually, to constipation.
Inflammation of the large intestine fuss cabins under the action of pathogenic microorganisms, the result is a rotting mucosal ulceration.Inflammation sometimes becomes chronic.Neoplasms are formed as tumor proliferating in a direction towards the opening of the colon.But the results achieved in the diagnosis of cancer surgery and allow to detect and handle the cancer at an early stage.
etiology of irritable bowel syndrome (IBS) is not fully identified, and is a functional bowel disease state characterized by pain in the abdomen, bloating, diarrhea frequently, or conversely, constipation.Some patients have IBS occurs as a reaction to stress, anxiety.
Prevention of colon diseases
Prevention of colon diseases consists primarily in preventing constipation.Status of the intestine depends on the amount and quality of food.Meals should be varied.The diet should be present foods rich in fiber, vegetables, dairy products.
prevent constipation contributes significantly to an active lifestyle.People with lazy bowel and prone to constipation, additionally recommended Physiotherapy.You can not suppress the urge to defecate.Frequently such suppression leads to the fact that the intestines refuses to work.Tendency to constipation to be regarded as abnormal, and accordingly to treat it.
important role in disease prevention takes anal hygiene.After each bowel movement is necessary to clean the anus using toilet paper or use water.Tempted to be cool, but not cold and not hot water.
desire for violent weight loss, fad diets leads to the fact that decreases the amount of food the stomach is lost, and therefore, in the intestine by stepping a little stool.All this leads to constipation.Some take laxatives medications and herbs to induce defecation.This forced defecation leads to dehydration, which in no way conducive to health.
person loses weight due to water loss, but fat from the body in this way is not displayed.In addition, the intestine gets used to the extra stimulation, and refuses to work without laxative tablets.
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