Explain about process of digestion?
Answers
Food enters the mouth and passes to the anus through the hollow organs of the GI tract. Digestion happens when food moves through the GI tract. Muscles in the hollow organs contract and relax, moving like a wave that travels through the ocean. This moves food along. Peristalsis is the process of the movement of food through the GI tract.
So, digestion begins in the mouth when you chew and ends in the large intestine 18 to 20 hours later. As food passes through the GI tract, it mixes with digestive juices, causing large molecules of food to break down into smaller molecules. Think of a can of tomato soup. When you open the can, it is a thick red blob. You have to add water to make the blob turn into the soup - this is similar to how the digestive juices break down the molecules into nutrients.
Absorption of the smaller molecules, including carbohydrates, proteins, fats, vitamins, and minerals, happen through the walls of the small intestine and go into the bloodstream. Then, the circulatory system, specifically the blood, works to distribute these nutrients to the rest of the body.
You eat until you're satisfied, and then you do not think about digestion again. But for the next 18 to 20 hours, your digestive system is doing its job. The food you ate travels throughout your body.
The process of digestion begins from the mouth and is completed in the small intestine. When we consume food, it travels from our mouth and reaches our stomach through a long tube called as an alimentary canal or the gastrointestinal tract.
This alimentary canal or gastrointestinal tract begins from the mouth cavity and continues into the pharynx, stomach, large intestines, and finally stops at the anus. During the movement of food particles from mouth to the stomach and to the small intestine, it gets digested gradually as they travel through various compartments of the gastrointestinal tract. The process of digestion begins from the mouth cavity and ends in the anus.
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