aortic arch
aortic arch
nounDefinition of AORTIC ARCH
: one of the arterial branches in vertebrate embryos that exist in a series of pairs with one on each side of the embryo, connect the ventral arterial system lying anterior to the heart to the dorsal arterial system above the alimentary tract, and persist in adult fishes but are reduced or much modified in the adult of higher forms
First Known Use of AORTIC ARCH
1868
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