Which artery is the first branch off the arch of the aorta on the right side?

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Multiple Choice

Which artery is the first branch off the arch of the aorta on the right side?

Explanation:
The arch of the aorta usually gives three branches: the first on the right side is the brachiocephalic trunk, which then divides into the right common carotid and right subclavian arteries to supply the head, neck, and right upper limb. The left common carotid and left subclavian arteries are the other two branches on the arch. The right coronary artery, by contrast, comes from the ascending aorta just above the aortic valve, not from the arch. So the first branch off the arch on the right side is the brachiocephalic trunk.

The arch of the aorta usually gives three branches: the first on the right side is the brachiocephalic trunk, which then divides into the right common carotid and right subclavian arteries to supply the head, neck, and right upper limb. The left common carotid and left subclavian arteries are the other two branches on the arch. The right coronary artery, by contrast, comes from the ascending aorta just above the aortic valve, not from the arch. So the first branch off the arch on the right side is the brachiocephalic trunk.

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