Across
- 3. "Minute air sacs" where gaseous exchange of carbon dioxide and oxygen take place between circulating blood and the air.
- 5. The respiratory system removes _____ from cells/ tissues & delivers it to environment. (2 words)
- 8. A long tube that connects Larynx to lungs.
- 10. The action of diaphragm contracting drawing air in the lungs.
- 11. Branches of the trachea that connect with each lung.
- 12. The ______ are the essential organs of the respiratory system.
Down
- 1. Common to both the respiratory and digestive tracts>
- 2. The respiratory system takes in _____ from enviorment & delivers it to tissues and cells within body.
- 4. The action of relaxation of the diaphragm muscles releasing air from lungs.
- 6. Aka "Voice box" also regulates amount of air entering or exiting lungs.
- 7. The act of breathing.
- 9. Act of breathing consisting of 2 movements, Inspiration & expiration.