L43_NPB_101

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Unformatted text preview: act lumen into blood or lymph 10 DigesRve System Components •  DigesRve tract •  •  •  •  •  –  ConRnuous from mouth to anus –  Consists of Mouth Pharynx Esophagus Stomach Small intesRne •  Accessory digesRve organs –  Salivary glands –  Exocrine pancreas –  Biliary system •  Liver •  Gallbladder –  Duodenum –  Jejunum –  Ileum –  –  –  –  Cecum Appendix Colon Rectum •  Large intesRne •  Anus 11 Gross Anatomy of the Human GI Tract See Table 16 ­1; pg. 582 ­3 12 Gross Anatomy of the Human GI Tract See Table 16 ­1; pg. 582 ­3 13 DigesRve Tract •  Wall has same general structure throughout length from esophagus to anus •  Four major Rssue layers –  Mucosa •  Innermost layer –  Submucosa –  Muscularis externa –  Serosa •  Outer layer Fig. 16 ­2; pg. 594 14 Mucosa •  Lines luminal surface of digesRve tract •  Highly folded surface greatly increases absorpRve area •  Three layers –  Mucous membrane •  Serves as protecRve surface •  Modified for secreRon and absorpRon •  Contains –  Exocrine gland cells – secrete digesRve juices –  Endocrine gland cells – secrete blood ­borne gastrointesRnal hormones –  Epithelial cells – speci...
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This note was uploaded on 11/07/2010 for the course NPB NPB 101 taught by Professor Weidner/wingfield during the Spring '08 term at UC Davis.

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