Across
- 1. the hollow muscular organ forming an air passage to the lungs and holding the vocal cords
- 4. lead to the alveoli
- 7. located between the upper left heart chamber (left atrium) and the lower left heart chamber (left ventricle)
- 9. tiny air sacs of the lungs which allow for rapid gaseous exchange
- 10. 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.
- 12. main artery that carries blood away from your heart to the rest of your body
- 13. one of four valves that control blood flow in the heart It's between the lower right heart chamber (right ventricle) and the artery that delivers blood to the lungs (pulmonary artery)
Down
- 1. left ventricle is the heart's main pumping chamber; one of the four chambers of the heart
- 2. the first step of the respitory system
- 3. branch off into smaller and smaller passageways
- 5. pumps blood low in oxygen to the lungs;one of the four chambers of the heart
- 6. The airway that leads from the larynx (voice box) to the bronchi
- 8. arteries blood vessels that carry oxygen-poor blood from the right side of your heart to your lungs
- 11. hollow tube inside the neck that starts behind the nose and ends at the top of the trachea (windpipe) and esophagus