Across
- 3. airway that leads from the larynx (voice box) to the bronchi
- 5. hollow tube inside the neck that starts behind the nose and ends at the top of the trachea (windpipe) and esophagus
- 9. veins blood vessels that carry oxygen-rich blood from your lungs to your heart
- 10. one of the four chambers of the heart. The right atrium receives blood low in oxygen from the body and then empties the blood into the right ventricle.
- 12. one of four valves that control blood flow in the heart
- 13. tiny air sacs of the lungs which allow for rapid gaseous exchange
- 15. first step of the respitory system
Down
- 1. one of the four chambers of the heart. The left atrium receives blood full of oxygen from the lungs and then empties the blood into the left ventricle.
- 2. one of the four chambers of the heart. The right ventricle pumps blood low in oxygen to the lungs
- 4. A tiny branch of air tubes in the lungs
- 6. located between the upper left heart chamber (left atrium) and the lower left heart chamber (left ventricle)
- 7. extension of the trachea and serve as the central passageway into the lungs
- 8. the heart's main pumping chamber
- 11. main artery that carries blood away from your heart to the rest of your body
- 14. The area of the throat containing the vocal cords and used for breathing, swallowing, and talking