Assertion: circulatory system | /r/CapableOf | arise with first blood
Facets:
value: embryologically
type: MANNER
value: from the splanchnic mesoderm
type: TRANSITIVE-OBJECT
Source sentences:
text: Embryologically, the cardiovascular system in vertebrates arises from the splanchnic mesoderm, with the first blood and vessels formed in the wall of the yolk sac.