VAN 211: Veterinary Histology and Embryology (2+2)

MONOGASTRIC STOMACH

• The 1^st indication of the stomach appears as dilation in the foregut. The dilation enlarges but is not uniform and most of the enlargement is dorsal.
• Once the dorsal enlargement is over, the stomach undergoes a 90^º rotation along cranio-caudal axis. Thus the dorsal enlargement rotates forward the left side of the embryo.
• Hence the stomach lies with its dorsal part on the left and ventral part on the right. The cranial part of the dorsal enlargement of the stomach grows more than the caudal part forming the fundus.
• The boundry of dorsal enlargement becomes greater curvature and of the ventral part is lesser curvature.