dr navneet kumar professor anatomy.kgmu lko histology of lower gastro intestinal tract by navneet...
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Dr Navneet Kumar Professor Anatomy .KGMU LKO
Histology of lower gastro Histology of lower gastro intestinal tractintestinal tract
By Navneet kumarProfessor 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
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 mucosae2.Submucosa Brunner's gland3.Musculalis layer -inner circular -outer longitudinal4. 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
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 mucosae2.Submucosa -NO gland 3.Musculalis layer -inner circular -outer longitudinal4. Serosa
Dr Navneet Kumar Professor Anatomy .KGMU LKO
Dr Navneet Kumar Professor Anatomy .KGMU LKO
Dr Navneet Kumar Professor Anatomy .KGMU LKO
Dr Navneet Kumar Professor Anatomy .KGMU LKO
Small intestine -jejunum
Dr Navneet Kumar Professor Anatomy .KGMU LKO
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 mucosae2.Submucosa -aggregated Lymphoid
nodule (peyers patches) - mircofold cells (“M” Cell)3.Musculalis layer -inner circular -outer longitudinal4. Serosa
Dr Navneet Kumar Professor Anatomy .KGMU LKO
Small intestine -ileum
Dr Navneet Kumar Professor Anatomy .KGMU LKO
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 mucosae2.Submucosa 3.Musculalis layer -inner circular -outer longitudinal4. Serosa or adventitia
Dr Navneet Kumar Professor Anatomy .KGMU LKO
Dr Navneet Kumar Professor Anatomy .KGMU LKO
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 mucosae2.Submucosa Lymphoid nodule 3.Musculalis layer -inner circular -outer longitudinal4. Serosa
Dr Navneet Kumar Professor Anatomy .KGMU LKO
Dr Navneet Kumar Professor Anatomy .KGMU LKO
Dr Navneet Kumar Professor Anatomy .KGMU LKO
Appendix
Dr Navneet Kumar Professor Anatomy .KGMU LKO
Dr Navneet Kumar Professor Anatomy .KGMU LKO
Anorectal junction