Human Body

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Across
  1. 3. The largest component of blood
  2. 4. Blood vessel that carries blood to the heart
  3. 5. The muscle that helps us breathe
  4. 7. Organ responsible for bumping blood
  5. 9. Where most of digestion takes place
  6. 10. An organ contains at least ____ different types of tissues
  7. 13. Food is taken into the body
Down
  1. 1. Tiny, thin-walled blood vessels
  2. 2. Location of gas exchange
  3. 5. Food is broken down into nutrients
  4. 6. How does oxygen enter the bloodstream?
  5. 8. Where does blood first enter the heart?
  6. 11. Blood vessel that carries blood away from the heart
  7. 12. Biggest organ in the respiratory system