function of the right and left common carotid arteries
Common carotid artery In anatomy, the left and right common carotid arteries (carotids) (English: /kəˈrɒtɪd/[1][2]) are arteries that supply the head and neck with oxygenated blood; they divide in the neck to form the external and internal carotid arteries.[3][4]
Artery An artery (plural arteries) (from Greek ἀρτηρία (artēria), meaning 'windpipe, artery')[1] is a blood vessel that takes blood from the heart to all parts of the body. Most arteries carry oxygenated blood; the two exceptions are the pulmonary and the umbilical arteries, which carry deoxygenated blood to the organs that oxygenate it. The effective arterial blood volume is that extracellular fluid which fills the arterial system.