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Digestion at CHS
Review the anatomy of the digestive system
| Digestive system term | Description |
|---|---|
| digestion | breakdown of food |
| absorption | transfer of nutients into bloodstream |
| sphincter | circular muscle that closes off a tube |
| esophagus | connects mouth to stomach |
| enamel | covers crown of tooth |
| pulp | found inside tooth; where nerves and blood vessels are |
| dentin | beneath enamel of tooth |
| HCl, mucus,pepsin | contents of gastric juice |
| oropharynx | portion of throat in back of mouth |
| nasopharynx | portion of throat in back of nose |
| accessory organ | assist digestive process |
| mucous membrane | found lining digestive system |
| submucosa | beneath mucous membrane |
| serosa | covers outside of digestive system |
| peritoneum | serous membrane that lines abdominopelvic cavity |
| mesocolon | extends from the colon to the posterior abdominal wall |
| mesentery | fan-shaped membrane that attaches small intestine together |
| visceral peritoneum | part of the peritoneum that covers organs |
| parietal peritoneum | part of the peritoneum that lines the abdominopelvic cavity |
| ingestion | taking in of food |
| deciduous | baby teeth |
| 20 | number of baby teeth |
| 32 | number of adult teeth |
| caries | dental decay (cavity) |
| mastication | chewing |
| deglutition | swallowing |
| contents of saliva | mucus, water, salt, amylase |
| alimentary canal | another term for digestive tract |
| papillae | raised areas on tongue |
| uvula | prevents food from entering nose |
| incisors | front teeth |
| cuspids | canine teeth |
| molars | 3 back teeth for grinding |
| wisdom teeth | third set of molars; last teeth to emerge |
| bolus | food ball you swallow |
| chyme | food + gastric juice in stomach |
| gingiva | gums |
| pharynx | throat |
| epiglottis | leaf-shaped cartilage which covers the opening of the trachea when you swallow |
| root | part of tooth beneath gums |
| greater curvature | lateral curvature of stomach |
| lesser curvature | medial curvature of stomach |
| phyloric sphincter | between stomach and duodenum |
| cardiac sphincter | between esophagus and stomach |
| rugae | folds lining stomach |
| duodenum | first part of the small intestine |
| jejunum | middle portion of the small intestine |
| ileum | last portion of the small intestine |
| villi | fingerlike projections that line small intestine; increase surface area |
| microvilli | projecting folds of the villi |
| teniae coli | bands that pucker colon |
| lacteal | lymph capillaries that absorb fats |
| cecum | first part of the colon; a blind pouch |
| ileoocecal valve | sphincter between the ileum and the cecum |
| rectum | temporary storrage area for indigestible food residue |
| feces | solid waste material |
| defecation | the process of eliminating feces |
| vermiform appendix | worm-like lymphoid tissue attached to the cecum |
| peptic ulcer | ulcer along stomach lining |
| pyloric stenosis | obstruction of the pyloric sphincter |
| gingivitis | inflammation of gums |
| caries | tooth decay |
| Vincent disease | gingivitis caused by bacteria common in teenagers |
| leukoplakia | white patches on tongue; precancerous |
| peritonitis | inflammation of peritoneum |
| periodontitis | infection of gums and supporting bone |
| irritable bowel syndrome | disorder involving pain and constipation or diarrhea; intestine is overly sensitive to stimulation; can be caused by stress |
| appendicitis | infection of the appendix |
| fecalith | hardened piece of feces that may cause appendicitis |
| flatus | "gas" |
| hiatal hernia | stomach protrudes through esophagial hiatus |
| GERD | chronic acid reflux |
| enteritis | intestinal inflammation |
| gastroenteritis | inflammation of intestine and stomach |
| nausea | unpleasant sensation; urge to vomit |
| vomiting | reverse peristalsis |
| peristalsis | smooth muscle contraction of the digestive system |
| emesis | another word for vomiting |
| gastritis | inflammation of the stomach |
| diverticulitis | infection of diverticuli |
| diarrhea | abnormally watery bowel movement |
| constipation | hard stool or difficulty with defecation |
| obstipation | extreme constipation |
| colonoscope | used to examine colon |
| hemorrhoids | varicose veins of the rectum |
| spastic constipation | caused by overstimulation of the intestinal canal; canal narrows and space inside is not large enough to permit passage of fecal material |
| flaccid constipation | caused by lazy or atonic intestinal muscles |
| Helicobacter pylori | bacteria which causes some ulcers |