Development of stomach and duodenum

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Presentation transcript:

Development of stomach and duodenum

The posterior wall of the stomach expands during the 4th and 5th weeks to form the greater curvature. During the 7th week, the stomach rotates clockwise on its longitudinal axis

The rotation of the stomach around its longitudinal axis commences with vacuolization of the right side of the thick mesenchymal bar that initially suspends the stomach from the posterior body wall. Curved arrows indicate directions of movements; straight arrows (E) indicate a series of changes over time.