消化管 舌 组织学和胚胎学课件.ppt

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1、,Digestivetract,Light C,Dark C,Taste pore,Taste bud,filiform and fungiform papillae（HE）,circumvallated papillae（HE）,Tongue foliate papillae（HE）,Foliate papillae-taste bud（HE）,Taste pore,mucous membrane of tongueLingual papillae:filiform,fungiform&circumvallated.Tast bud:dark C,light C&basal C.,Gener

2、al structure of the wall,1.mucosa:epithelium:Lamina propria:Muscularis mucosa:2.submucosa:3.Muscularis externa:4.adventitia:,Esophagus（HE）,Esophagus,Esophageal gland,Esophagus,1.mucosa:Epi.:stratified squamous.Non-keratinized lamina propria:CT.muscularis mucosa:boudles of SMC.longitudinal2.sbumucosa

3、:esophageal glands,mucous.3.muscularis:inner circular,outer longitudinal 4.adventitia:fibrosa.,upper1/3:skeletal M.middle:mixed.Lower1/3:smooth M.,Stomach,fundus,Stomach,mucosa:Simple columnar Epi.:surface mucous cellLamina propria:gastric pit,gastric glandsMuscularis mucosa:inner circular,outer lon

4、gitudinal.submucosa:LCT.muscularis:inner oblique,middle circular,outer longitudinal.Adventitia:serosa.,fundic glands,location：lamina propria,1.Chief C2.Parietal C3.Neck mucous C4.Endocrine C5.Stem C,compositions：,Chief cells,LM:Lower columnar;basophilic;Nucleus located in the lower parts.Secretory g

5、ranules.EM:Gol,Apical of the nucleus;mit.Secretory granules,apical of cytoplasm.Function:pepsinogen,Parietal cells,LM:C large，cone-shaped or round.acidophilic.Nucleus is round,centrical.EMIntrocellular secretory canaliculiµvilli.Tubulovesicular system.Mit.are abundant.functions:Hcl&intrinsic fa

6、ctor.,Centrallacteal,SMC,Cap.,Intestinal gland,1 absorbtive C,3 Paneth C,2 goblet C,1 striated border,4 endocrine C,5 stem C,Intestinal villi,muscularis,submucosa,folds,villi,adventitia,microvilli（striated border）,Small intestine,mucosa:Epi.:simple columnar,absorbtive C+goblet C.Lamina propria:small

7、 intestinal gland,central lacteal.Muscularis mucosa:inner circular,outer longitudinal.villi:the finger-like processes composed of epithelium layer and lamina propria protruding into the lumen.,submucosaThe duodenal gland,mucosa.Circular folds:mucosa&submucosa protruding into the lumen.Appears as pro

8、cesses.muscularis:inner circular,outer longitudinal.adventitia:serosa.,small intestinal gland,Absorbtive CGoblet CEndocrine CStem CPaneth CLM:the base of gland.arranged in groups of 3-5 cells.in the apex,coarse acidophilic granules.EM:protein-secreting cell.functions:produce lysozyme.,Large intestin

9、al,Lamina propria,Muscularis mucosa,Epi.,Large intestinal gland（goblet C）,Mucosa of large intestine（HE）,Large intestine,mucosa:no villi,no circular folds.Simple columnar Epi.:abundant goblet C.Lamina propria:large intestinal glands,no paneth C.Muscularis mucosa:,appendix,No villi,intestinal glandIs

10、scanty.Lamina propria:abundant LT.Serosa,SimpleColumnarGoblet Cabundant,Simple columnarStriated borderGoblet C,Simplecolumnar,Striatedsquamous,Epi.,villus,Gastricpit,surface,Largeintestine,Smallintestine,stomach,esophagus,The comparisons between mucosa of variant digestive tract（1）,Fundic gland of s

11、tomach:chief,parietal,neck mucous,endocrine,stem C.Small intestinal gland:absorbtive,goblet,paneth,endocrine,stem C.Large intestinal gland:absorbtive,goblet,endocrine,stem C.,The comparisons between mucosa of variant digestive tract（2）,Key points,Structure characteristics of variant digestive tract.The similar and the different.Esp,the variance of tunica mucosa.Such as,the villi and the glands.,Thank you!,