In the embryo, the mesentery of the dilated portion of the enteric canal that is the future stomach; it gives rise to the greater omentum and consequently is involved in the formation of the omental bursa. The spleen and body of the pancreas develop within it, and thus the splenorenal and gastrosplenic ligaments are derivatives of the (dorsal) m.. SYN: dorsal m., mesogaster. [meso- + G. gaster stomach]
- ventral m. the primitive midline mesentery extending between future stomach and proximal duodenum and the anterior abdominal wall superior to the umbilicus (umbilical vein). The liver develops within it, and consequently the lesser omentum, coronary and falciform ligaments are derivatives of it. The umbilical vein runs in its caudal free edge, becoming the postnatal round ligament of the liver.
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1) a ventral mesentery of the embryonic stomach that persists as the falciform ligament and the lesser omentum called also ventral mesogastrium
2) a dorsal mesentery of the embryonic stomach that gives rise to ligaments between the stomach and spleen and the spleen and kidney called also dorsal mesogastrium
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meso·gas·tri·um (mez″o-) (me″zo-gasґtre-əm) [meso- + Gr. gastēr belly] the portion of the primordial mesentery that encloses the stomach, and from which the greater omentum is developed. mesogastric adjMedical dictionary. 2011.