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principal tubelike structure of the digestive system extending from mouth to anus
The process of altering the chemical and physical composition of food so that it can be absorbed and used by the body cells
breakup large chunks of food into smaller bits; chewing (mastication), swallowing (deglutition), and peristalsis
circular, longitudinal, and oblique (in stomach) layers of muscle important in GI motility
generalized and serious type of inflammation and infection from gingivitis; leading cause of tooth loss among adults
a disease of the enamel, dentin, and cementum of teeth that results in the formation of a permanent cavity; tooth decay
types of teeth
incisors (cutting), canines or cuspids (piercing and tearing), premolars or bicuspid, and molars or tricuspid (grinding)
digestive enzyme found in the saliva that begins the chemical digestion of carbohydrates
a tubelike structure made of muscle and lined with mucus membrane; function as respiratory and digestive system; nasopharynx, oropharynx, laryngopharynx
prevents food from reentering the esophagus when stomach contract; also called gastroesophageal sphincter
a bulging out of the stomach through the opening of the diaphragm through which the esophagus normally passes; this condition may prevent the cardiac sphincter from closing allowing stomach contents to flow back into the esophagus; condition known as GERD
fingerlike fold covering the plicae; contains lymphatic vessel; absorb carbohydrate and protein
epithelial cells that cover villus; increases the surface area of each villus for absorption of nutrients
minor and major duodenal papillae
opening of ducts that empty pancreatic digestive juice and bile from the liver into the small intestine
cecum, ascending colon, transverse colon, descending colon, sigmoid colon, rectum and anal canal
a large, moist, slippery sheet of serous membrane that lines the abdominal cavity and covers organ
lace apron, hangs down from lower edge of stomach and transverse colon over intestine
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