Respiratory System

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Across
  1. 3. - Sheet of muscle that helps with breathing.
  2. 7. - Tiny blood vessels where gas exchange occurs.
  3. 10. - Molecules that diffuses into the lungs as a waste product.
  4. 11. - Also known as the throat.
  5. 12. - Inflates and deflates as we breath.
  6. 13. - Process that brings air into the lungs.
  7. 14. - Tiny air sacs in the lungs where gas exchange occurs.
Down
  1. 1. - Process that removes air from the lungs.
  2. 2. - Tiny passageways for are in the lungs that lead to alveoli.
  3. 4. - Moistens, warms, and filters air.
  4. 5. - Passageways that leads air into each lung.
  5. 6. - Passageway that carries air to the body; also called the windpipe.
  6. 8. - Structure that allows use to speak; also known as the voice box.
  7. 9. - Molecule that diffuses into the blood vessels.