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24 Digestive System
Chpt 24
| Question | Answer |
|---|---|
| function of esophagus | secrets ucus and transports food |
| does the esophagus digest | no |
| esphogeal hiatus | end of esphogus where it connects to stomach |
| esophogeal mucosa | nonkeratinized stratified squamos, epithelium, lamina propria, muscularis muscosae |
| type of tissue is lamina propria | aerolar connective tissue |
| type of tissue is muscularis muscosae | smooth muscle |
| esophogeal submusosa | aerolar connective tissue, blood vessels, mucous glands |
| esopheal muscularis | 1st 3rd is skeletal muscle, then skeletal and smooth muscle, then smooth muscle |
| LES or lower esophageal sphincter | regulates movement of food from esophagus to stomach |
| GERD | LES fails to close properly, HCL burns esophageal walls which is called heartburn, avoid foods that increase stomach acid |
| pyloric sphincter | seperates stomach and duodenum, prevents chyme from returning to stoach |
| pylorospasm | sphincter is too tight food does pass through pyloric sphincter, stomach overfills causing vomit |
| pyloricstenosis | narrowing of sphincter that causes projectile vomit |
| parts of the sm intestines | pyloric sphincter, duodenum, jejunum, ileum, ileocecal sphincter |
| parts of the lg intestines | ileocecal sphincter, cecum, colon which consists of ascending colon, transverse colon, descending colon and sigmoid colon, rectum, anal canal |
| why is the stomach larger than gi tract | fundus stores food and the stomach needs room to churn food, GI tract is mainly responsible for transporting food |
| salivary amaylase | breaks down starch in mouth |
| sequence of GI | mouth, teeth,tongue, parotid, submadibular and sublingual salivary glands, pharynx, UES, esophagus, LES, stomach, pyloric sphincter, duodenum, jejunum, ileum, ileocecal sphincter, cecum, ascending, transverse, descending, sigmoid, rectum, anal canal, anus |
| what is attached to the cecum | appendix |
| 4 common layers of GI | mucosa, submucosa, muscularis, serosa |
| most inner layer of GI | mucosa |
| stomach epithelium | mucosa, submucosa, muscularis, serosa |
| colon epithelium | mucosa prevents microbes and pathogens, submocosa, muscularis, taniae coli |
| areaolar connective tissues | contains several cells and connects to skin |
| nonkeratinized stratified squamous | no keratin, moist, 1st line of defense from microbes |
| lamina propria | supports epithelium and holds blood vessels in place |
| digestive enzymes of saliva | salivary amylase and lingual lipase |
| gastric juice | pepsin, gastric lipase |
| pancreatic juice | pancreatic amylase, trypsin, chymotrypsin, elastase, carboxypeptidase, pancreatic lipase, nucleases are ribonuclease and deoxyribonuclease |
| brush border | xdextrinase, maltase, sucrase, lactase, enterokinase, peptidases, amionpeptidase, dipeptidase, nucleosidase and phosphates |
Created by:
kayjay
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