Structure, organs, functions and characteristics of the human digestive system. Scheme (structure) of the human digestive system
Inside our body is hardest machine: “Power plant”, “chemical factory” and “a huge waste disposal unit” in one whole. And we all have to eat, to put it into action. During life, we consume approximately thirty tone of food.
By the way sleep – This is a chance to digest food. Although our mind is asleep, our digestive system not resting, but digesting our dinner. Food – the beginning of what happens in our body. On food digestion leaves only ten% energy consumed by us daily. About 70% spent on maintaining at idle processes that save us life. On our everyday life it only remains 20%. Food is fuel that we burn for the sake of our muscles and other processes. She provides us nutrients, preserving our health. And food replenishes our reserves domestic pharmacy, which heals our wounds and allows us to stand on our feet. Food travels around the clock body: from table to toilet.
Structure (scheme) of the human digestive system
Raw material enters us in various shapes, sizes and tastes. During the life of an average person consumes 8000 eggs, 500 kilograms of cheese, 5000 pieces of bread, 5000 liters of milk, 25 pigs, 1000 kilograms of fruit and
Food will be be subjected to physical and chemical attack because the body will decompose complex ingredients of food on the main nutrients. The attack begins with chewing. Our 32 teeth in the mouth are necessary for cutting, grinding and tearing food into small particles. Enamel – It is a white enveloping surface of the teeth, and it is the most durable substance in the body. It is as solid as glass. However, this living tissue, and it may be slightly damaged on the surface. While the teeth destroy the physical structure of solid food, the attack rises saliva.
Total 2 chemical enzyme composed saliva help break down the complex structure of food. One of these enzymes required for transformations starch molecules to glucose (sugar). If you want to check, chew anything starchy for 2 minutes and your mouth will become sweet as a result of a chemical reaction. A piece of food slips along esophagus Only for 3 seconds Valve at the base of the esophagus is the gate of the abdomen. Inside of us is muscle bag the size of a boxing glove – stomach.
Stomach – This is a food processing device. is he dissolves or splits the food, preparing it for the next stage of digestion. And yet, this storage tank to store food between meals. Stomach can stretch and hold approximately