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A&P1-13 Digestive Sy

Ch 13: Digestive System

Alimentary canal Or gastrointestinal. The gastrointestinal tract that begins at the mouth and ends at the anus
Bolus Chewed bite of food mixed with saliva
Caries An erosion through the enamel of a tooth into the dentin. Commonly called a cavity
Chemical digestion The breakdown of complex molecules to their building blocks so they can be absorbed
Chyme The liquefied contents of the stomach
Constipation **No per instructor** Condition of which defecation is difficult because too much water has been removed from the feces
Defecation **No per instructor** Process of removing feces from the body
Deglutition The process of swallowing
Diarrhea **No per instructor** Condition of a runny stool
Emulsify To break lipids into smaller droplets
Feces **No per instructor** The contents of the large intestine, composed of 75% water and 25% solids.
Flatus **No per instructor** Gas that is produced by bacteria and causes bloat, discomfort, and an unpleasant odor when released
Ingestion The intake of food into the mouth
Lacteals Small lymphatic vessels that are located in the villi of the small intestine and into which the products of lipid digestion are absorbed
Mass movement **No per instructor** The movement of feces from the transverse colon to the sigmoid colon to the rectum; initiated by distension of the stomach
Mastication The process of chewing
Mechanical digestion The breakdown of large pieces of complex molecules to smaller pieces of complex molecules
Parasite An organism that lives on or in another organism (the host) and obtains its nourishment there
Peristalsis Wave-like contractions used to move materials along the digestive system
Segmentation **No per instructor** A stationary constriction of the smooth muscle of the small intestine in ring-like patterns to further churn chyme and mix in bile and digestive enzymes to finish chemical digestion
Created by: teribere



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