Head and neck anatomy left subclavian artery. The head and neck are emptied of blood by the subclavian vein and jugular vein. The brachiocephalic artery or trunk is the first and largest artery that branches to form the right common carotid artery and the right subclavian artery. This artery provides blood to the right upper chest, right arm, neck, and head, through a branch called right vertebral artery. The right and left vertebral artery feed into the basilar artery and upward to the Posterior cerebral artery, which provides most of the brain with oxygenated blood. The posterior cerebral artery and the posterior communicating artery
Varicose veins insufficiency method (CHIVA), which intends saving the veins, decreases varicose veins and is safer than vein stripping in those with chronic venous insufficiency. CHIVA comes from the French translation for the technique, conservatrice et hémodynamique de l'insuffisance veineuse en ambulatoire. The operation involves performing one to four small incisions on average, under local anesthesia, to remove by precise ligatures abnormal blood flow due to valvular incontinence and responsible for varicose vein dilation. The patient returns home the same day. This method tends to correct the venous functions in order to cure the symptoms of venous insufficiency such as varicose veins,