The cephalic trunk artery is also called the innominate artery. The cephalic trunk, also called the innominate artery, is found only on the right side; the cephalic trunk originates from the arch of the ascending aorta, which then gives rise to the right common carotid and right subclavian arteries. It is also important to note the difference between the cephalic and brachial veins: the cephalic and brachial veins are joined by the ipsilateral internal jugular vein and the subclavian vein, which are found on both the right and left sides, before joining the superior vena cava; whereas the cephalic and brachial trunks are found only on the right side, and they give off the right common carotid and right subclavian arteries, and the left common carotid and left subclavian arteries originate directly from the arch of the aorta. During carotid ultrasound, the cephaloarterial trunk may be described, which can reflect cerebral atherosclerosis to a certain extent and provide important clinical data for the prevention of cerebrovascular disease.