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

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

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

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

Dr Navneet Kumar Professor Anatomy.KGMU LKO

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

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

Dr Navneet Kumar Professor Anatomy.KGMU LKO

Duodenum

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

Dr Navneet Kumar Professor Anatomy.KGMU LKO

Small intestine -jejunum

Dr Navneet Kumar Professor Anatomy.KGMU LKO

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

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

Dr Navneet Kumar Professor Anatomy.KGMU LKO

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

Dr Navneet Kumar Professor Anatomy.KGMU LKO

Large intestine

Dr Navneet Kumar Professor Anatomy.KGMU LKO Large intestine

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

Dr Navneet Kumar Professor Anatomy.KGMU LKO

Appendix

Dr Navneet Kumar Professor Anatomy.KGMU LKO

Anorectal junction