The heart

1234567891011
Across
  1. 3. chamber in the bottom of the heart
  2. 5. bundle of ......... controls the contraction of the ventricles
  3. 8. type of blood vessel that carries blood towards the heart
  4. 9. chamber in the top of the heart
  5. 10. type of blood vessel that carries blood away from the heart
Down
  1. 1. contraction of the heart muscle
  2. 2. relaxation of the heart muscle
  3. 4. artery which supplies oxygenated blood to the heart muscle itself
  4. 6. heart tissue which splits the left and right ventricles
  5. 7. the artery which carries blood from the heart to the rest of the body
  6. 11. the side of the heart which pumps blood to the lungs