Across
- 3. Tiny blood vessels where gas exchange occurs.
- 5. The membrane that surrounds the lungs to reduce friction.
- 7. The tiny air sacs in the lungs where gas exchange occurs
- 8. The gas inhaled during breathing and delivered to muscles.
- 9. The gas removed from the blood during respiration
- 11. The main airway connecting the throat to the lungs
- 12. Small air passages that deliver air to the alveoli.
- 13. The process of breathing out
Down
- 1. The process of breathing air into the lungs.
- 2. The part of the brain responsible for controlling breathing.
- 4. The voice box that contains the vocal cords
- 6. Blood vessel that carries oxygenated blood from the lungs to the heart
- 10. The muscle responsible for breathing