The Heart

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Across
  1. 4. This carries oxygen, nutrients, and waste products around the body.
  2. 6. This type of blood does not contain oxygen.
  3. 8. The heart is made of ________.
  4. 10. These carry blood AWAY from the heart.
  5. 11. There are _______ chambers in the heart.
Down
  1. 1. This type of blood contains oxygen.
  2. 2. These prevent blood from flowing backwards.
  3. 3. The number of times your heart beats in one minute is known as your ______ Rate.
  4. 5. This type of blood vessel has a very thin wall, only one cell thick.
  5. 7. There are _______ types of blood vessels which carry blood around the body.
  6. 9. These carry blood IN to the heart.