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malrotation-1 - Embryological Anatomy of the Embryological...

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Embryological Anatomy of the Embryological Anatomy of the Gastrointestinal Tract Gastrointestinal Tract Lawrence M. Witmer, PhD Lawrence M. Witmer, PhD Department of Biomedical Sciences College of Osteopathic Medicine Ohio University Athens, Ohio 45701 [email protected] Handout download: http://www.oucom.ohiou.edu/dbms-witmer/gs-rpac.htm 22 January 2002
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Overview • Digestive tract divided into segments based on vascular supply • Foregut (esophagus, stomach, part of duodenum, biliary apparatus): celiac artery • Midgut (rest of small & large bowel up almost to splenic flexure): superior mesenteric artery • Hindgut (rest of large bowel to superior part of anal canal): inferior mesenteric artery • Dorsal and ventral mesenteries and their fates • Ventral mesentery: mostly breaks down, except lesser omentum & falciform ligament • Dorsal mesentery: mostly retained, forming greater omentum & other named mesenteries
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Case Presentation Choking and continuous coughing were observed in a newborn infant. There was an excessive amount of mucous secretion and saliva in the infant’s mouth, who experienced considerable difficulty in breathing. The pediatrician was unable to pass a catheter through the esophagus into the stomach.
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