The Circulatory System

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Across
  1. 2. What does your heart pump?
  2. 4. True or false. Platelets live for 20 to 26 days?
  3. 7. What is a straw-coloured fluid?
  4. 8. About how many days do red cells live for?
  5. 11. How much blood does a healthy adult contain?
Down
  1. 1. What lets blood flow from the atria to the ventricles?
  2. 3. What does blood deliver?
  3. 5. What is the largest blood vessel in the body?
  4. 6. What is your heart
  5. 9. Approximately how many platelets in a cubic centimetre of blood?
  6. 10. About how big is your heart?