Circulatory System
Blood circulates from the upper systemic loop originating at the aortic arch, and includes: the brachiocephalic artery, left common carotid and left subclavian artery. The head and neck are emptied of blood by the subclavian vein and jugular vein.
Read more about this topic: Head And Neck
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“Whoever places his trust into a system will soon be without a home. While you are building your third story, the two lower ones have already been dismantled.”
—Franz Grillparzer (1791–1872)