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Digestive System - Coggle Diagram
Digestive System
Anatomy
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Pancreas: A gland with exocrine and endocrine tissues - The exocrine portion functions in digestion secreting enzymes and an alkaline solution into the small intestine via a duct - The endocrine helps in homeostasis and the endocrine system
Stomach: An organ of the digestive system that stores food and preforms preliminary steps of digestion
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Small Intestine: The longest section of the alimentary canal the principal site of the enzymatic hydrolysis of food macromolecules and the absorption of nutrients
Duodenum: It is here that chyme from the stomach mixes with digestive juices from the pancreas, liver, and gallbladder, as well as from gland cells of the intestinal wall itself
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Ileum: the final and longest section, it absorbs any remaining nutrients before moving waste to the large intestine
Liver: A large internal organ in vertebrates that preforms diverse functions, such as producing bile, maintain blood glucose level, and detoxifying poisonous chemicals in the blood
Bile emulsifies fats which can then be soluble by water (stored in the gallbladder and secreted by the gallbladder
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Food Processing
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Digestion: the second stage of food processing, food is broken down into molecules small enough for the body to absorb
Chemical Digestion: necessary because animals cannot directly use the nucleic acids, fats, phospholipids, and most carbohydrates in food
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Absorption: the animal’s cells take up (absorb) small molecules such as amino acids and simple sugars (mainly small intestine - chemical digestion)
Elimination: undigested material passes out of the digestive system, completes the process
Essential Nutrients
Minerals: inorganic nutrients, such as iron and sulfur, that are usually required in small amounts
Essential Amino Acids: An amino acid that an animal cannot synthesize itself and must be obtained from food in prefabricated form
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