Respiratory System

12345678910111213
Across
  1. 1. branches of the trachea that leads oxygen into the lungs
  2. 3. region in the throat that brings oxygen into the trachea
  3. 5. air sacs in lungs that bring oxygen into the bloodstream
  4. 6. the process of air moving in and out of the lungs
  5. 8. organ that brings oxygen into the body
  6. 10. to breathe out
  7. 11. voice box; contains the vocal cords
  8. 12. to breathe in
  9. 13. sheet of muscle found between the chest and abdomen
Down
  1. 2. colorless, odorless, tasteless gas that we breathe in
  2. 4. the process of oxygen moving from alveoli into the bloodstream
  3. 7. tube that brings oxygen from the larynx to the bronchi; also known as the windpipe
  4. 9. waste product given off in gas exchange between the blood and alveoli