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Digestion Vocabulary Digestion: the process of breaking food sown into simpler substances for the body cells to use Enzyme: a substance in a living thing that affects how fast chemical reactions take place Saliva: watery liquid that moistens the mouth and food. Salivary glands: gland under the tongue and near the ear that produce saliva Bile: a greenish-yellow fluid produced by the liver to digest food Villi: a tiny fingerlike projection the small intestine that absorbs digested food Urea: a substance formed from waste material in the liver and excreted in urine Excretion: the process of removing waste products from the body Tissue: cells that work together to perform a specific function Organ: different tissues that work together to perform a major bodily function System: a group of organs that work together to perform a function Peristalsis: the rhythmic contractions that move food through the digestive system Amylase: the enzyme that breaks down starch Organs in the digestive system: Mouth, esophagus, stomach, small intestine, liver, gallbladder, pancreas, large intestine Digestive System: group of organs that breakdown or digest food into molecules the body can use Large intestine: part of the digestive system in which solid wastes are formed and water is absorbed into the blood. Pancreas: gland that produces enzymes and insulin Esophagus: tube that carries food from the mouth to the stomach Stomach: the muscular organ that stores and helps digest food. Liver: Digestive organ that produced bile Gall Bladder: organ under the liver that stores bile Small intestine: part of the digestive system where most of digestion takes place The Teeth: Incisors, canine, premolars, molars Producer: an organism that makes it own food Consumer: an organism that eats producers or other consumers Decomposers: an organism that feeds on the wastes of living organisms and on dead decaying plants and animals Herbivores: plant-eating consumers Carnivores: meat-eating consumers Omnivores: consumers that eat both plant and animals