The basics of the body: the eating channel – the functioning of the digestive tract
Food is the body's fuel. But before any use is made, it must be properly processed. The food processing plant of the body is the eating channel, which is about 10 m long (33ft long) muscle that begins in the mouth and ends in the anus.
When food comes into your mouth, the taste and temperature are examined by the tongue. Solid teeth are injured by the forearm teeth (tooth decay), then the back teeth or moles are chewed. Before the food is tasted, and during chewing the saliva passes through the mouth from the salivary glands near the lower jaw.
Saliva moistens foods and enzymes in which initial digestion is performed. When it is ready to swallow; the original wall was converted to a soft ball which was called a bolus and was heated or cooled to the appropriate temperature
. Although fast, this section is actually quite complex. First, the tongue pushes the bolus of the food into the cavity embedded in the muscles in the mouth of the mouth and in the back of the mouth: the throat. After the food is in the hopper, several activities take place in a few seconds to prevent swallowing from breathing disturbance.
From the hopper the bolus now enters the esophagus or the esophagus in the stomach. The bolus is not only due to gravitation in the esophagus, but the waves of muscular action called peristalsis have gone through.
During eating, the esophagus is closed by the ring of muscles, called the heart muscle, which prevents strongly acidic gastric contents from regurgitation into the esophagus. As the vault reaches the esophagus, the sphincter relaxes to open the path to the stomach.
The stomach is a compressible, muscular bag that is designed to store food (so you do not usually have to eat small food all day) to mix foods with different fruit juices and slowly release it into your gut.
Food is mixed as it becomes gastropod and relaxes, and the peristaltic waves move. By the time he had spent two or six hours in the stomach, the partially digested foods were crossed with different chemicals to a liquid called chyme.
Gastric exit is protected by a muscle known as a pylor sphincter. As peristaltic waves press the stomach through the stomach, the sphincter enters the strip in small amounts of reddish.
The longest part of the small intestine is not the length of 20 m (6 m), but its width – approx. 1 ½ inch (4 cm). Most of the digestion process occurs in the small intestine, not only due to the effect of the intestinal tract, but also of the digestive tract caused by the liver (epithelium) and the pancreas (pancreas).
Peristaltic waves move the bell along the small intestine and receive another thorough blend. If more foods enter the stomach, a small valve opens at the end of the small intestine and the chyme passes through the colon, 3ft (1.5m) long and an average diameter of 7.5cm.
In the large intestine, water is absorbed into the blood from digestive fluid residues. By the time these remains reach the anus, they are in the form of a solid feces. Instead of the continuous contraction of the peristalsis, the gradually more solid residues are moved by enormous propulsions, which occur only a few times a day. Finally, the faeces enter the anal canal, which the last sphincter locks the digestive tract. From the beginning the sphincter opens automatically when the anal channel is full. But as the nervous system matures, we learn to overwrite the automatic signals.
The nourishing channel works around 35 tons of food in an average of 70 years. No wonder, then, that it sometimes fails. Some eating disorders are so common that they have become domestic words – ulcers, infants, constipation, diarrhea, and heartburn – to name but a few. While some are unavoidable, there are ways to keep the digestive system healthy.
- Do not eat (or nourish the children) too much. This will burden digestion and cause weight problems. In infants, vomiting and withdrawal may occur.
- Food should be properly crushed. Digestion of carbohydrates in the mouth starts with phtaline, saliva.
- Contain enough fiber in your diet – fruit on the skin, slightly cooked vegetables, bran with breakfast grain. Dietary fiber can not be digested along the digestive tract, but it also stimulates the passage of food into the colon, helping to prevent constipation and possibly bowel disease.
- Avoid foods that you or your family respond poorly
- . ] Minimizing stress. This increases the acid secretion of the stomach and the musculature of the whole system, which results in the food being pressed too fast to not be digestible properly
- Cessation of smoking, as acid secretion is induced as a stress.
Source by sbobet th