Circulatory System

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Across
  1. 3. The main artery of the heart
  2. 4. This is the name given to the upper chamber of the heart
  3. 5. This is the name given to the lower chamber of the heart
  4. 9. If the blood is rick in this waste gas, then the blood is bluish in colour
  5. 12. This type of blood cells are few in number and they protect the body from germs
  6. 13. This blood vessel allows blood to flow away from the heart
  7. 14. This blood vessel brings blood toward the heart
Down
  1. 1. Blood contains this yellowish liquid that contains proteins, nutrients and hormones
  2. 2. This is the red pigment found in blood that carries oxygen through the blood
  3. 6. This very small blood vessel is one cell thick
  4. 7. This controls the direction of the flow of blood through the heart
  5. 8. The central important organ of the circulatory system
  6. 10. The blood carries this important gas to the whole body, which is needed for organs to function
  7. 11. The blood gets the oxygen from these organs