Circulatory System

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Across
  1. 4. receives blood from the atria
  2. 8. carry blood away from the heart
  3. 9. a muscle located slightly to the left of the middle of the chest
  4. 10. brakes down rapidly in the blood
  5. 11. the other 45% of blood
  6. 12. made up of dissolved gases, water, proteins, and waste products
  7. 14. the two upper chambers of the heart
Down
  1. 1. produced in bone marrow
  2. 2. carries blood to the heart
  3. 3. kills foreign cells by puncturing a hole in the membrane
  4. 5. helps red blood cells carry oxygen
  5. 6. produced in the thymus
  6. 7. joins the arteries and veins together
  7. 13. muscle that separates the atria and ventricle