systemic arch defined in 1951 yearsystemic arch - systemic arch;
systemic arch - Fourth aortic arch of tetrapod vertebrate embryo, becoming in adult main blood-supply for body other than head. In Amphibia and reptiles both right and left arches persist in the adult; in birds only the right; in mammals only the left (the aorta).
near systemic arch in Knolik
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