Digestive Systems And The Digestive System Essay

Digestive Systems And The Digestive System Essay

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Digestive System
The digestive system is a very large system in our bodies. This system runs all the way from the mouth, where we put whole food in, to the large intestine that includes the rectum and anus, where waste exits. The digestive system is composed of the mouth, esophagus, liver, stomach, gallbladder, pancreas, small intestine, large intestine, rectum, and anus (Diseases). The gastrointestinal (GI) tract that makes up the digestive system includes all of these organs other than the liver, pancreas, and gallbladder, which are digestive accessory organs that food does not have to pass through to be broken down (The Digestive Sytem and Body Metabolism). The study of this system is called gastroenterology which broken down translates to the study (ology) of the stomach (gastro-) and intestines (entero-) (The Digestive Sytem and Body Metabolism). The function of the digestive system is to break down all of the food and drink particles that we put into our bodies into carbohydrates, protein, fats, and vitamins; it helps metabolize them and turns them into nutrients that our body can use for energy, growth, and cell repair (Diseases). Hormone and nerve regulators control the digestive process (Diseases).
The digestive system starts with the mouth and esophagus. Once food is placed in the mouth, the process of mastication is started (The Digestive Sytem and Body Metabolism). While we chew our food the saliva, from the salivary glands, helps break down the starches to send the food down the pharynx that connects to the esophagus and leads to the stomach (Tim Taylor).
The stomach is the next part of digestion where food is broken down further. The stomach usually holds over one liter of food content (The Digestive Sytem...


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..., or colon, is the last stop for whatever is left of the processed or unprocessed food. The colon reabsorbs the water, salts, water-soluble nutrients, and electrolytes and changes this waste from liquid to solid (The Digestive Sytem and Body Metabolism). There are three sections of the large intestine: the ascending, transverse, and descending colon (The Digestive Sytem and Body Metabolism). The end of the descending colon, the sigmoid, is directly attached to the rectum where the solid waste of the body is stored until it is released (The Digestive Sytem and Body Metabolism).
Food passes through many organs in our bodies from the time it is ingested to the time it is secreted (Tim Taylor). All of these organs play a part in breaking down food so that the nutrients that our bodies need is absorbed and the waste that our bodies don’t need is removed (Tim Taylor).

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