Body systems

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Across
  1. 3. An organ that exchanges oxygen and carbon dioxide with the blood
  2. 4. Large, flat muscle at the bottom of the chest cavity that helps with breathing
  3. 7. Found in the kidney, little filter that blood goes through.
  4. 9. group of organs that work together to perform a specific function
  5. 11. Upper chamber of the heart.
  6. 12. A group of similar cells that perform the same function.
  7. 13. lower chamber of the heart.
  8. 15. Filters waste from the blood like urea, water, salt and proteins.
Down
  1. 1. Airways in the lungs that lead from the bronchi to the alveoli.
  2. 2. A collection of tissues that carry out a specialized function of the body
  3. 5. Allows air to pass to and from lungs (windpipe)
  4. 6. A blood vessel that carries blood back to the heart
  5. 8. A cell fragment that plays an important part in forming scabs.
  6. 10. A blood vessel that carries blood away from the heart.
  7. 14. The basic unit of structure and function in living things