development of midgut (special embryology)
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Anatomy of Anatomy of IntestineIntestine
Dr. Sherif Fahmy
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Dr. Sherif Fahmy
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Dr. Sherif Fahmy
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Development Development of Mid-gutof Mid-gut(Page 85)(Page 85)
Dr. Sherif Fahmy
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Dr. Sherif Fahmy
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Dr. Sherif Fahmy
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Mesoderm
Hindgut
Midgut
Pericardial bulge Vitelline ductDefinitive yolk sac
L.S. in folded embryo
Dr. Sherif Fahmy
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Dr. Sherif Fahmy
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Dr. Sherif Fahmy
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Dr. Sherif Fahmy
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Dr. Sherif Fahmy
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Dr. Sherif Fahmy
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Dr. Sherif Fahmy
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Anomalies of MidgutAnomalies of Midgut1- 1- Anomalies of mesenteries:Anomalies of mesenteries:
- Mobile cecum.- Mobile cecum.- Reto-colic pocket.- Reto-colic pocket.
2- 2- Body wall defect:Body wall defect:- Omphalocele.- Omphalocele.- Gastroschisis.- Gastroschisis.- Infantile umbilical hernia.- Infantile umbilical hernia.
3- 3- Stenosis or atresia of intestinal Stenosis or atresia of intestinal lumenlumen
4- 4- Subhepatic cecum and appendixSubhepatic cecum and appendix Dr. Sherif Fahmy
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5- Abnormal rotation of midgut loopA- Arrest of rotation after 90 degree- Ascending colon and cecum are on left side of abdomen.B- Rotation for 90 degree to opposite direction- Transverse colon is deep to duodenum.6- Remenants of vitelline duct-Meckel’s diverticulum.-Vitelline cyst-Vitelline fistula.
Dr. Sherif Fahmy
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Dr. Sherif Fahmy
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Dr. Sherif Fahmy