Digestive sy 2
- 1. MICROSCOPIC STRUCTURE OF THE ESOPHAGUS, STOMACH, AND SMALL AND LARGE INTESTINE HISTOPHYSIOLOGY OF THE INTESTINE BLOOD AND LYMPH CIRCULATION
- 2. Recommended addresses: http://www.med.muni.cz/histol/ Sylabus-zahr.rtf http://www.med.muni.cz/histol/ vseob2pda.rtf http://www.med.muni.cz/histol/ atlas.htm
- 4. D igestive system consists of:
- 5. GENERAL STRUCTURE OF THE ALIMENTARY CANAL
- 9. Esophagus
- 10. Stomach ( lat. ventriculus, ř. gaster, stomachus) segment of alimentary canal that digests food and secretes hormones food mixed with gastric juice = chyme volume cca 2 l
- 12. Cardia ventriculi: a narrow circular band (1,5 -3,0 cm in with) at the transition between esophagus and stomach change of the epithelium mucous cardiac glands in the lamina propria (mucus + lysozyme)
- 14. Fundus et corpus ventriculi:
- 16. Mucosa: - simple columnar epithelium - lamina propria mucoae - loose areolar conn. tissue - lamina muscularis mucoae
- 17. lamina propria is penetrated with branched tubular glands- gastric (fundic) glands 3 parts: base, body and neck 4 cell types: - chief (pepsinogenic) - parietal (oxyntic, HCl) - nucous neck - enteroendocrine gastric juice
- 18. an enzyme typical of oxyntic (parietal) cells is carbonic anhydrase
- 19. Pylorus ventriculi: deeper gastric pits, reticular conn. tissue, pyloric glands
- 21. Small intestine (intestinum tenue) 5–7 m in length digestion, absorption 3 segments : duodenum, jejunum and ileum
- 22. circular plicae (valves of Kerckring, plicae circulares) Intestinal villi (villi intestinales) Microvilli
- 23. Small intestine - surface circular plicae (plicae of Kerckring, plicae circulares) Intestinal villi (villi intestinales) Microvilli
- 26. Tunica mucosa Epithelium Lamina propria mucosae Lamina muscularis mucoase The epithelium: absorptive cells: enterocytes secretory cells: goblet cells, Paneth´s cells, enteroendocrine cells
- 27. Paneth´s cells
- 30. Duodenum
- 31. Jejunum
- 32. BLOOD AND LYMPH CIRCULATION
- 36. Large intestine (intestinum crassum) 1,5 m in length intestinum caecum with vermiform appendix (appendix vermiformis), colon (colon ascendens, transversum, descendens, sigmoideum) and rectum (intestinum rectum) faeces
- 37. Large intestine - surface semilunar plicae absence of intestinal villi crypts of Lieberkühn retained
- 42. The rectum:
- 46. Obecná stavba stěny trávicí trubice
Editor's Notes
- #10: ca. 20cm. Contains esophageal glands, otherwise follows the general structure of the tubular organs for upper GIT. Muscle layer contain 3 Parts: Upper- SKELETAL/ Middle: SKELETAL(extarnally), SMOOTH(internally)/ Lower - SMOOTH
- #11: In the interior of the stomach the gastric mucosa is thrown into large folds; Gastric Folds Gastric canal: The mucosa next to the lesser curvature forming a few longitudinally ridges
- #13: Change of epithelium= METAPLASIA