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The Digestive System and Ulcerative Colitis

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Submitted By khalialisette
Words 1092
Pages 5
Khalia Roche
Professor Wolfson
BIOL 111
The Digestive System and Ulcerative Colitis
The Digestive System is one of the most important systems of the human body. The purpose of the digestive system is to process all foods that enter through the mouth. The foods and liquids must be processed until small enough to be absorbed and used by the cells of the body (National Institute of Health). According to WebMD, “the digestive tract, also known as the gastrointestinal (GI) tract, consists of a long, twisting tube that reaches from the mouth to the anus.” It includes several organs: the mouth, pharynx, esophagus, stomach, small intestine, and large intestine (National Institute of Health). There are also other major accessory organs included in the digestion process which are: the salivary glands, liver, gallbladder, and the pancreas. These organs secrete fluids needed during the digestive process (National Institute of Health).
Food undergoes three processes while in the digestive system: Digestion, Absorption, and Elimination. Digestion is an intricate process where the food that is ingested is turned into nutrients, which the body uses for energy, growth and cell repair (WebMD). There are two types of digestion: mechanical digestion and chemical digestion.
Mechanical digestion involves the breakdown of larger food portions and is acted upon by thousands of enzymes. This digestion begins with the mouth and continues in the stomach (National Institute of Health). The second type of digestion is chemical. According to the National Institute of Health, “chemical digestion uses water and digestive enzymes to break down complex molecules through a process called hydrolysis.”
Absorption occurs mainly in the small intestine after being passed through from the stomach. The small intestine is made up of three parts – the duodenum, the jejunum, and the ileum – and this is

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