Mainly, occlusion of the distal internal carotid artery occurs. These arteries are both branches of the external carotid artery. Arterial thrombosis is the formation of a thrombus within an artery. These are the left main coronary artery and the right coronary artery. Most MIs occur due to coronary artery disease. Quickly stopping the medication in those with coronary artery disease may worsen symptoms. Carotidynia is a syndrome marked by soreness of the carotid artery near the bifurcation. The patient was transferred to another hospital for treatment of his coronary artery disease. The arterial supply comes via the left colic artery. The coarctation typically occurs after the left subclavian artery. Behind the pulmonary artery is the bronchus. The aorta is the root systemic artery (i.e., main artery). The pulmonary valve is located at the base of the pulmonary artery. It gives vascular branches to the wall of the brachial artery. Such presentations are associated with a higher risk of cardiac artery aneurysms.