Question

1. If you were a drop of blood traveling up the ascending aorta into then arriving at the aortic arch, what would be the first blood vessel you could turn into and then exit the aortic arch?

Answer 1

The ascending aorta is the first part of aorta that will move in the ascending direction with the blood from the left ventricle. This blood drop will move into the brachiocephalic trunk . Yes the aortic arch specifically gives rise to various number of important branches from them

The very 1st  branch of the aorta in a normal individual is the innominate artery, that is also known as the brachiocephalic trunk. So the drop of blood that moves up the ascending aorta will exit the arch of aorta from the first branch that is the brachiocephalic trunk and this is how it will exit the arch of aorta . after its specific origin, the brachiocephalic trunk divides into the right common carotid  arterie and the subclavian