Emergency Medical Technician (EMT) Practice Test

Blood flows into the aorta after it leaves the left ventricle. The pulmonary arteries transport blood from the right ventricle to the lungs, so option A is incorrect. The carotid artery is responsible for supplying oxygenated blood to the head and neck, so option B is incorrect. The renal arteries carry blood to the kidneys, so option C is also incorrect. The aortic arch is part of the body's main artery, the aorta, and is responsible for distributing blood from the heart to the rest of the body, making it the correct answer.