5th Grade Respiratory Practice

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Across
  1. 3. small blood vessels that surround the alveoli.
  2. 5. pockets in the lungs that hold and transfer oxygen to capillaries.
  3. 8. branched tubes inside of the lungs.
  4. 10. the system responsible for breathing and getting oxygen from the environment.
Down
  1. 1. sweep away dust and germs.
  2. 2. the tube that connects your lungs and your mouth/nose.
  3. 4. the gas animals breathe out.
  4. 6. a sticky, thick fluid that covers the inside of your body.
  5. 7. muscle that helps you breathe.
  6. 8. two giant tubes that branch into each lung.
  7. 9. organs that allow you to breathe.
  8. 11. the gas animals breathe in.