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Vocabulary

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Term
Definition
Absorption   Passage of materials through the walls of the small intestine into the bloodstream  
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Amino Acid   Small building blocks of protein (like links in a chain), released when the proteins are digested  
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Amylase   Enzyme (-ase) secreted by the pancreas and salivary glands to digest starch (amyl/o)  
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Anus   Terminal end or opening of the digestive tract to the outside of the body  
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Appendix   Bind pouch handing from the cecum (in the right lower quadrant {RLQ}). It literally means handing (pend/o) onto (ap-, which is a form of ad-)  
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Bile   Digestive juice made in the liver and stored in the gallbladder. It breaks up (emulsifies) large fat globules  
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Bilirubin   Pigment released by the liver in bile  
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Bowel   Intestine  
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Canine Teeth   Pointed, dog-like teeth (canine means pertaining to dog) next to he incisions. Also called cuspids or eyeteeth  
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Cecum   First part of the large intestine  
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Colon   Portion of the large intestine consisting of the ascending, transverse, descending, and sigmoid segments  
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Common Bile Duct   Carries bile from the liver and gallbladder to the duodenum. Also called the choledochus  
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Defecation   Elimination of feces from the digestive tract through the anus  
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Deglutition   Swallowing  
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Dentin   Primary material found in the teeth It is covered by the enamel in the crown and a protective layer of cementum in the root  
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Digestion   Breakdown of complex foods to simpler forms  
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Duodenum   First part of the small intestine. Duo=2, den=10, measures 12 inches long  
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Eliminiation   Act of removal of materials from the body; in the digestive system, the removal of indigestible materials as feces  
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Emulsification   Physical process of breaking up large fat globules into smaller globules, thereby increasing the surface area that enzymes can use to digest the fat  
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Enamel   Hard, outermost layer of the tooth  
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Enzyme   Chemical that speeds up a reaction between substances  
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Esophagus   Tube connecting the throat to the stomach  
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Fatty Acids   Substances produced when fats are digested  
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Feces   Solid waste; stool  
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Gallbladder   Small sac under the liver; stores bile  
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Glucose   Simple sugar  
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Glycogen   Starch; glucose is stored in liver cells in this form  
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Hydrochloric Acid   Substance produced in the stomach; necessary for digestion of food  
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Ileum   Third part of the small intestine  
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Incisor   Any one of four front teeth in the dental arch  
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Insulin   Hormone produced by the endocrine cells of the pancreas. It transports sugar from the blood into cells and stimulates glycogen formation by the liver  
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Jejunum   Second part of the small intestine  
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Lipase   Pancreatic enzyme necessary to digest fats  
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Liver   Large organ located in the RUQ of the abdomen; secretes bile; stores sugar, iron and vitamins; produces blood proteins; destroys worn-out RBC; and filters out toxins; eights about 2.5-3 pounds  
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Lower Esophageal Sphincter (LES)   Ring of muscles between the esophagus and the stomach, also called cardiac sphincter  
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Mastication   Chewing  
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Molar Teeth   Sixth, seventh and eighth teeth from the middle on either side of the dental arch  
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Palate   Roof of the mouth. The hard lies anterior to the soft and is supported by the upper jawbone (maxilla). The soft is the posterior fleshly part between the mouth and the throat  
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Pancreas   Organ behind the stomach; produces insulin (for transport of sugar into cells) and enzymes (for digestion of foods)  
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Papillae   Small projections on the tongue, nipple-like elevation  
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Parotid Gland   Salivary gland within the cheek, just anterior to the ear  
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Peristalsis   Rhythmic contractions of the tubular organs  
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Pharynx   Throat, the common passageway for food from the mouth and for air from the nose  
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Portal Vein   Large vein bringing blood to the liver from the intestines  
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Protease   Enzyme that digests protein  
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Pulp   Soft tissue within a tooth, containing nerves and blood vesssels  
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Pyloric Sphincter   Ring of muscle at the end of the stomach, near the duodenum  
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Pylorus   Distal region of the stomach, opening to the duodenum  
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Rectum   Last section of the large intestine, connecting the end of the colon and the anus  
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Rugae   Ridges on the hard palate and the wall of the stomach  
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Saliva   Digestive juice produced by salivary glands  
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Salivary Glands   Parotid, sublingual, and submandibular glands  
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Sigmoid Colon   Fourth and last, S-shaped segment of the colon, just before the rectum; empties into the rectum  
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Sphincter   Circular ring of muscle that constricts a passage or closes a natural opening  
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Stomach   Muscular organ that receives food from the esophagus  
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Triglycerides   Fat molecules composed of three parts fatty acids and one part glycerol  
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Uvula   Soft tissue hanging from the middle of the soft palate  
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Villi   Microscopic projections in the wall of the small intestine that absorb nutrients into the bloodstream  
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