2. Development of Midgut2.1 Formation of midgut loop2.1.1 duodenumformation:--formed by terminal part of foregut and the cephalicpartof the midgutStomachDuodenumTransverseCecal budCephalic limbcolonofprimSup.intestinal loopmesentericarteryVitellineduct.Small intestineBACaudal limbofprim,intestinalloop
2. Development of Midgut 2.1 Formation of midgut loop 2.1.1 duodenum formation: -formed by terminal part of foregut and the cephalic part of the midgut
2.1.2 midgut loop:1)by 5th week, midgut grows rapidlyto form a"U"-shaped loop, its apex connects with yolksac by way of the narrow vitelline duct中肠祥2)physiologicalumbilical herniationthe 6th-10th weekmidgut loop growsrapidly, enters theumbilicalcoelom
2.1.2 midgut loop: 1) by 5th week, midgut grows rapidly to form a “U”-shaped loop, its apex connects with yolk sac by way of the narrow vitelline duct 2)physiological umbilical herniation: the 6th-10th week, midgut loop grows rapidly, enters the umbilical coelom