What artery or vien....the arterial system have one of these; the venous system have two?

thanks
Answers:
Brachiocephalic...

In the arterial vasculature only the right side has the brachiocephalic trunk stale the aorta (the other two branches are the left common carotid and the left subclavian arteries). However, the venous system have 2 brachiocephalic veins which join up to form the superior vena cava.
I think that English homework you've be skipping should be done first...

But seriously, if you want an answer please just type it the way it's written on your homework.

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