· 1.2 Lower foregutL102S-12141516:9
• 1.2 Lower foregut
1.2.1 Esophagus> proliferation-→ obliterates (a transientsolidstate)→recanalization110Tracheobronchialdiverticulum21214151639Improperrecanalization?
1.2.1 Esophagus → proliferation→ obliterates (a transient solid state )→ recanalization Tracheobronchial diverticulum esophagus Improper recanalization?
. 1.2.2 Stomach--by the 4th week, appears as a fusiform dilationof foregutL-102stomach-121415163
• 1.2.2 Stomach -by the 4th week, appears as a fusiform dilation of foregut stomach
-greater and lesser curvatures: posterior partof stomach grows faster than the anteriorportion-by 7-8th week, along the longitudinal axisthe stomach carries out a 90o° clockwiserotation,its greater curvatures to the leftOmentalbursa胃小弯胃大弯
-greater and lesser curvatures: posterior part of stomach grows faster than the anterior portion -by 7-8th week, along the longitudinal axis, the stomach carries out a 90°clockwise rotation, its greater curvatures to the left Omental bursa
--rotation around the transverse axis,the caudal(pyloric)end of the stomach moves upward and to the right:thecephalic(cardiac)endmovesdownwardandtotheleft胰腺肝左上右下
-rotation around the transverse axis, the caudal(pyloric) end of the stomach moves upward and to the right; the cephalic( cardiac)end moves downward and to the left