20xx年醫(yī)學(xué)專題—-3-消化管2(咽-肛管-雙語版)(編輯修改稿)
2024-10-31 12:03 本頁面
【文章內(nèi)容簡介】 udinal fibers Serous (visceral peritoneum),Stomach,第十四頁，共四十五頁。,Variations in position of stomach,第十五頁，共四十五頁。,Duodenum,first and widest part of small intestine extends from pylorus to duodenojejunal flexure approximately 25cm long and 45 cm in diameter Cshaped and moulded around head of pancreas retroperitoneal, except for a small segment (13 cm) at the beginning common bile duct and pancreatic ducts－open into the second part,General features,第十六頁，共四十五頁。,Duodenum,Four parts ★ 1. Superior part Duodenal bulb Superior duodenal flexure 2. Descending part Inferior duodenal flexure 3. Horizontal part 4. Ascending part Duodenojejunal flexure,第十七頁，共四十五頁。,Descending part Longitudinal fold of duodenum Major duodenal papilla common opening of the common bile duct and pancreatic duct 75cm from incisors Minor duodenal papilla,Duodenum,第十八頁，共四十五頁。,Duodenum,Suspensory muscle of duodenum and Suspensory lig. of duodenum (lig. of Treitz) ★ a surgical landmark, descends from the right crus of diaphragm to duodenal termination.,第十九頁，共四十五頁。,Jejunum and ileum,第二十頁，共四十五頁。,Jejunum and Ileum,第二十一頁，共四十五頁。,Meckel’s diverticulum Persistence of proximal portion of yolk sac Common malformation of digestive tract (2－4%) ， more prevalent in males About 2－5cm long and located 30－100cm from ileocecal valve Usually asymptomatic but: May become inflamed (mimicking appendicitis) or bleed,Jejunum and Ileum,第二十二頁，共四十五頁。,Large Intestine,Approximately 1.5m long, Five parts: Cecum Vermiform appendix Colon Rectum Anal canal,第二十三頁，共四十五頁。,Colic bands Haustra of colon Epiploic appendices,Large Intestine,Features ★,第二十
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