| A | B |
| heart | muscle that pumps blood through the body |
| atria | top chamber of the heart |
| ventricles | bottom chamber of the heart |
| veins | vessels that carry blood to the heart |
| arteries | vessels that carry blood away from the heart |
| valves | flaps the the heart |
| aorta | body's main artery |
| high blood pressure | blood pressure remains raised |
| heart attack | death to a section of the heart muscle |
| coronary vessels | blood vessels which carry blood to and from the heart |