Digestion Start From The Mouth

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The digestive process is the process by which foods are broken down, absorbed or excreted by the body. Digestion start from the mouth. Mastication is the broken down of food into smaller particles and saliva contain mostly water which aid in chewing and swallowing. It also contain important enzyme amylase, that begin the broken down of starches or carbohydrate. The food passes the esophagus from the mouth, a long tube which connect from the mouth to the stomach. The muscle on the upper part of the stomach relaxes to receive large volumes of swallowed food or liquid from the esophagus. Stomach is a muscle that helps to break down food into smaller pieces. Small intestine comes next in the order of digestive system. The small intestine is an …show more content…

Protein is the most abundant substance in the human body. Protein are nearly the component of every cell and are often referred to as building block because of their in development and repair of bone muscle skin and blood cells. Protein from food is broken down into amino acids by the digestive system. Amino acids are used to build and repair muscles, for making hormones, red blood cells, hair and other tissues. Adequate protein intake is also important for a healthy immune system. Because protein is a source of calories, it will be used for energy. Carbohydrates can be grouped into two categories: simple and complex. Simple carbohydrates are sugars, complex carbohydrates consist of starch and dietary fibre. Carbohydrate provides the body with energy that used to fuel it. Since carbohydrate is our preferred sources of fuel, our body must find another source of energy when we do not eat enough. As a result, the body will break down stored fat in a process called ketosis. Ketosis produces a fuel called ketones and is an important process that ensure sufficient energy is provided to the brain. When adequate carbohydrate intake continues for an extended period of time excessive ketone are produced resulting in acid acidic blood and a condition called ketoacidosis. Fibre is the indigestible portion of plant foods that helps move food through the digestive system. It softens stools by absorbing water. Fibres, also known as “bulk “or “roughages” can be found in whole

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