9Cook SDN

4. A drug taken after a transplant to reduce the activity of the immune system.
5. The movement of blood in the wrong direction when a valve fails to close properly.
6. What is used to measure the voltage in a circuit?
8. A person who provides an organ, tissue or blood for use in another person.
10. heart disease A condition in which the arteries supplying the heart muscle become narrowed, reducing blood flow and oxygen supply.
12. valve A problem in which a heart valve does not open fully or does not close properly.
13. What is used to measure current in a circuit?
16. rhythm A loss of the normal coordinated heartbeat, causing blood to be pumped less effectively.
18. failure A serious condition in which the heart can no longer pump sufficient blood to meet the body’s needs.
19. The immune response in which a transplanted organ is recognised as foreign and attacked.

1. artery The blood vessel that supplies the heart muscle itself with oxygenated blood.
2. Positively charged particle found in the nucleus of an atom.
3. A structure that ensures blood flows in one direction only through the heart and blood vessels.
5. clot A potential complication of mechanical heart valves that may require long-term medication to prevent.
7. A medical procedure in which a failing organ is replaced with a donor organ.
9. heart A mechanical device sometimes used temporarily to keep a patient alive while they wait for a donor heart.
11. A small device used to correct an irregular heart rhythm by sending electrical impulses to the heart.
14. atrium The chamber near which the heart’s natural pacemaker is located.
15. valve A man-made replacement valve that is durable but increases the risk of clot formation.
17. valve A replacement valve made from human donor tissue or animal tissue.