The Heart and Circulatory System

12345678910111213141516171819
Across
  1. 2. A tightening of a muscle
  2. 4. A gas essential for human life
  3. 6. The upper chamber of the heart
  4. 7. Liquid which carries white cells, red cells and platelets
  5. 9. Regular expansion and contraction of an artery
  6. 10. A substance that provides nourishment
  7. 11. Living things are made up of these
  8. 12. To carry from one place to another
  9. 14. Fight disease
  10. 18. Relating to the circulation of blood - to move around
  11. 19. A heavy gas - poisonous to humans
Down
  1. 1. The lower chamber of the heart
  2. 2. Thin blood vessels which connect veins and arteries to form a network throughout the body
  3. 3. A complete part that has a specific function
  4. 5. Unwanted remains
  5. 8. Carries blood away from the heart
  6. 9. Support clotting and stop bleeding
  7. 13. Carry oxygen
  8. 15. Made up of many interrelated parts
  9. 16. To die
  10. 17. Carry blood from the heart