where does blood in the right subclavian artery come from
The brachiocephalic trunk is the first artery to arise from the aortic arch, carrying blood to the right arm and the right side of the head and neck. Next to branch from the aorta is the left common carotid artery that supplies blood to the left side of the head and neck.Finally, the left subclavian artery arises from the aortic arch and supplies blood to the left arm.Prepared by Tim Taylor, Anatomy and Physiology Instructor.ll of the blood delivered from the heart to the systemic tissues of the body passes through the aorta, making it the largest artery in the human body. As the aorta extends from the heart, it begins as the ascending aorta before turning 180 degrees towards the bodyâs left side in the aortic arch.