ascending aorta
Noun
Meaning
the ascending part of the aorta as it emerges from the left ventricle
Source: WordNetSynonyms
Hypernyms
Examples
Dissection of the ascending aorta (type A) is a surgical emergency while dissection of the descending aorta (type B) can possibly be managed medically.
Dissection of the ascending aorta is an emergency because dissection may interrupt coronary blood flow and blood flow to the brain, neither of which tolerate ischemia particularly well.