Assertion: ascending aorta | /r/HasProperty | a portion of the aorta
Facets:
Source sentences:
text: The ascending aorta (AAo) is a portion of the aorta commencing at the upper part of the base of the left ventricle, on a level with the lower border of the third costal cartilage behind the left half of the sternum.
text: The ascending aorta is the portion of the aorta that is uprising.