Assertion: aorta | /r/CapableOf | form aortic arch
Facets:
value: on the left
type: LOCATION
value: essentially
type: DEGREE
Source sentences:
text: Essentially, the 4th aortic arch and dorsal aorta form the aortic arch on the left, but since the right dorsal aorta regresses distal to the right 7th intersegmental artery, on the left they form the proximal portion of the subclavian artery.