He and his colleagues took a thin slice of the main artery transporting blood from the heart , called the aorta , and placed it in a special microscope containing a sensitive needle tip .
In a group of 31 patients who had an undetected aneurysm and subsequent torn aorta from heavy lifting , 10 of them died .
有一组病人,共31人,曾患有动脉瘤,但没有诊断出来,后来由于举重导致大动脉破裂,其中10人死亡。
The authors say that while they recognize implementing their advice would entail screening huge numbers of people , " the alternative is to accept that every year we will lose some young athletes because of unknown enlargement of their aorta , " elefteriades says .
Some insects , bees included , have a heart and an aorta ( the vessel leading out of the heart ) that pumps the blood and gives it some semblance of direction ( from the back of the insect to the front ) , but beyond that there is no circulatory system .