大肠胚胎及解剖课件

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,人大肠的胚胎发育,解剖组织结构,谭庆华博士,新疆医斛大喾第一附属医院,人大肠的胚胎发育,1,大肠的胚胎发育,结肠的胚胎发育复,Rotation of the,杂而不可预测,特,Intestine,别是肠系膜的发育,和其对结肠的固定,这就是为什么结肠,镜检査时结肠的形,态特别多变,大肠的胚胎发育,2,From:indiana.edu/-anat550/gianim,From:indiana.edu/-anat550/gian,3,3月时降结肠,和升结肠系膜,与后腹膜融合,固定,而横结,肠系膜游离,From: Peter B Cotton, et al. practical gastrointestinal endoscopy the fundamentals,3月时降结肠,4,但有时仍有全结肠游离的患者。没有支点,插镜困难。,升结肠和降结肠系膜融合不全:可能在发,育过程中10-12周,结肠回纳腹腔延迟引起。,同时可能伴有肠肌间神分布的异常。,肠镜下见肠腔宽大,肠管冗长,易形成少,见的肠袢,From: Peter B Cotton, et al. practical gastrointestinal endoscopy the fundamentals,但有时仍有全结肠游离的患者。没有支点,5,大肠临床应用解剖,网膜结肠带横结肠结肠袋,肝曲,脾曲,升结肠,回肠末端,系膜结肠带,降结肠,前(游离),结肠带,肠脂垂,盲肠,阑尾,乙状结肠,直肠,From: Lawrence M. Witmer. Anatomy of the Clinical Anatomy of the,Large Intestine,大肠临床应用解剖,6,横结肠,全长约15m,50 cm,cm,5cm,降结肠,10 cm,升结肠,10 cm,cm,直肠,盲肠,cm,15 cm,5 cm,cn,乙状结肠,最宽大易穿孔,50 cm,肛管,4 cm,最狭窄,易梗阻,横结肠,7,mesenteric nodes,N,29,C,11.1,22.4,252,A,328,From: Lawrence M. Witmer. Anatomy of the Clinical Anatomy of the,Large intestine,mesenteric nodes,8,游离结肠带,肠脂垂,肠脂垂,长支,短支,网膜结肠带,肠系膜,系膜结肠带,边缘动脉,skandalakis surgical Anatomy 2019,From: Lawrence M. Witmer. Anatomy of the Clinical Anatomy of the,Large Intestine,游离结肠带,9,ER,ER,10,大肠胚胎及解剖课件,11,大肠胚胎及解剖课件,12,大肠胚胎及解剖课件,13,大肠胚胎及解剖课件,14,大肠胚胎及解剖课件,15,大肠胚胎及解剖课件,16,大肠胚胎及解剖课件,17,大肠胚胎及解剖课件,18,大肠胚胎及解剖课件,19,大肠胚胎及解剖课件,20,大肠胚胎及解剖课件,21,大肠胚胎及解剖课件,22,大肠胚胎及解剖课件,23,大肠胚胎及解剖课件,24,大肠胚胎及解剖课件,25,大肠胚胎及解剖课件,26,大肠胚胎及解剖课件,27,大肠胚胎及解剖课件,28,大肠胚胎及解剖课件,29,大肠胚胎及解剖课件,30,大肠胚胎及解剖课件,31,