What does a human's digestive tract look like?
- 26 Jul 19:45
- Hemorrhoid Treatment
The interest in the anatomy and physiology of the own body is in many people. Not only doctors should know the structure of the gastrointestinal tract and other human systems. Modern life dictates the need to have certain knowledge for everyone to be able to correctly explain their complaints,to orient themselves in the symptoms, to provide first aid to the needy in her person. Today there is a sufficient number of sources for studying the human body with visual pictures, photos and videos, in particular, the organs of the gastrointestinal tract.
- 1 How everything is arranged
- 2 What is
- 3 How does
work Everything is arranged
There is nothing unnecessary and unnecessary for a person, all parts of the body, organs and systems have mutual anatomical or functional relationships. Violation of the activity of one department entails failures in the work of others. This is particularly evident on the example of the functioning of the digestive tract.
The human digestive tract is a single system consisting of hollow digestive tubes located vertically behind each other and separated by special valves( muscle sphincter).The
Gecko originates from the oral cavity and ends with a passage opening, throughout it has several bends and extensions and a similar structure of the intestinal wall. There are four main functional layers that are distinguished:
- mucous membrane is an internal lining of the hollow organs in which the villi are located( through which the transport of nutrients in the small intestine is carried out), the glands producing the digestive juices( in the stomach), the lymphoid tissue, creates immune cells(in the large intestine);The
- submucosal layer consists of a loose connective tissue cell, in which there is a vascular-nerve bundle; here are the clusters of cells that produce the mucous secretion;
- is a well-developed layer of muscle fibers necessary for pushing food;
- serous coating - external protection from damage( peritoneum).
exist? In the human gastrointestinal tract, all departments are arranged one by one in order of priority to fulfill their task of providing the body with the energy required for life and material for the renewal of the cellular composition. One by one top down:
The gastrointestinal tract of a person from an anatomical-physiological point of view is more correctly called the digestive system. In addition to the main tube of the gastrointestinal tract in the process of food processing, there are additional components involved - salivary glands, liver, zhelcheoobrazuyuschaya and bile duct system, pancreas.
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All links of the human gastrointestinal tract fulfill their unique tasks in interaction with each other. This system is controlled by the activity of the cerebral cortex, regulated by the endocrine and immune systems. In general, life support for the human GTP carries out several important functions: the
- motor - is a mechanical chewing and mixing of the adopted food, the promotion of food from the throat to the below departments and the removal of the undisturbed part out;
- secretory activity - the selection of special digestive liquids or secretions( saliva, gastric and pancreatic juice, bile) containing acids and enzymes for the chemical splitting of food into separate ingredients;
- suction function - providing efficient transport of mineral ions, vitamin molecules, amino acids, monosaccharides, and other food components from the lumen of the digestive tract through the nasal epithelium in the bloodstream and lymph flow;
- excretory activity - excretion outside of the feces of toxic substances, metabolites of drugs and chemical compounds coming from the bloodstream into the intestinal lumen.
The gastrointestinal tract of a person carries out its activity in interaction with other organs and systems in a single process of providing vital functions of a living organism.
Studying your own body, structure and functions of its departments will help everyone to deal with emerging situations and problems, understand the severity of this or that symptom and the need to consult a doctor.