Across
- 3. chamber in the bottom of the heart
- 5. bundle of ......... controls the contraction of the ventricles
- 8. type of blood vessel that carries blood towards the heart
- 9. chamber in the top of the heart
- 10. type of blood vessel that carries blood away from the heart
Down
- 1. contraction of the heart muscle
- 2. relaxation of the heart muscle
- 4. artery which supplies oxygenated blood to the heart muscle itself
- 6. heart tissue which splits the left and right ventricles
- 7. the artery which carries blood from the heart to the rest of the body
- 11. the side of the heart which pumps blood to the lungs