1. Dr Navneet Kumar Professor Anatomy.KGMU LKO Histology of lower gastro intestinal tract By Navneet kumar Professor Department of Anatomy KGMU LKO

2. Dr Navneet Kumar Professor Anatomy.KGMU LKO Lower G.I.T Intestine Small Intestine -Duodenum -Jejunum - ileum Large intestine (Colon) -Appendix -Rectum -Anal canal

3. Dr Navneet Kumar Professor Anatomy.KGMU LKO Gross features of intestine Small Intestine Villi Valve of kerckring (plicae circularis) crypts of lieberkuhn (intestinal glands) Large intestine No Villi Sacculation +nt Teania coli +nt Appendices epiploicae

4. Dr Navneet Kumar Professor Anatomy.KGMU LKO

5. Small intestine -Duodenum 1.Mucus membrane -epithelium -Intestinal villi - Simple columnar - Goblet cells -lamina propria intestinal glands (crypts of lieberkuhn) -muscularis mucosae 2.Submucosa Brunner's gland 3.Musculalis layer -inner circular -outer longitudinal 4. Serosa

6. Dr Navneet Kumar Professor Anatomy.KGMU LKO Intestinal glands Absorptive cells Paneth cells Goblet cells Endocrine cells

7. Dr Navneet Kumar Professor Anatomy.KGMU LKO

8. Duodenum

9. Dr Navneet Kumar Professor Anatomy.KGMU LKO Small intestine -Jejunum 1.Mucus membrane -epithelium- Simple columnar - intestinal villi -lamina propria intestinal glands (crypts of lieberkuhn) -solitary Lymphoid nodule -muscularis mucosae 2.Submucosa -NO gland 3.Musculalis layer -inner circular -outer longitudinal 4. Serosa

10. Dr Navneet Kumar Professor Anatomy.KGMU LKO

13. Small intestine -jejunum

14. Dr Navneet Kumar Professor Anatomy.KGMU LKO

15. Small intestine -ILeum 1.Mucus membrane -Epithelium - Simple columnar - intestinal villi -Lamina propria intestinal glands (crypts of lieberkuhn) - Muscularis mucosae 2.Submucosa -aggregated Lymphoid nodule (peyers patches) - mircofold cells (“M” Cell) 3.Musculalis layer -inner circular -outer longitudinal 4. Serosa

16. Dr Navneet Kumar Professor Anatomy.KGMU LKO Small intestine -ileum

17. Dr Navneet Kumar Professor Anatomy.KGMU LKO

18. Large intestine 1.Mucus membrane -epithelium - Simple columnar - Goblet cells are more - villi are absent -lamina propria intestinal glands (crypts of lieberkuhn) -muscularis mucosae 2.Submucosa 3.Musculalis layer -inner circular -outer longitudinal 4. Serosa or adventitia

19. Dr Navneet Kumar Professor Anatomy.KGMU LKO

21. Large intestine

22. Dr Navneet Kumar Professor Anatomy.KGMU LKO Large intestine

23. Dr Navneet Kumar Professor Anatomy.KGMU LKO Appendix 1.Mucus membrane -epithelium- Simple columnar - villi are absent -lamina propria intestinal glands (crypts of lieberkuhn), lympgoid tissue -muscularis mucosae 2.Submucosa Lymphoid nodule 3.Musculalis layer -inner circular -outer longitudinal 4. Serosa

24. Dr Navneet Kumar Professor Anatomy.KGMU LKO

26. Appendix

27. Dr Navneet Kumar Professor Anatomy.KGMU LKO

28. Anorectal junction