Assertion: left aortic arch | /r/AtLocation | central position
Facets:
value: anatomically
type: MANNER
Source sentences:
text: This theory is based on the presence of double aortic arch in the embryo, where the ascending aorta splits into a right and a left aortic arch, which merge to form the descending aorta, anatomically located in a central position, anterior to the spine (Fig. 29.1).