Across
- 2. Provides structural protection for vital thoracic organs. Located between the neck and abdomen.
- 5. Protective corridor for vital structures. Located behind the sternum, and in front of the pericardium.
- 6. Enhances lung elasticity. Separates the upper and middle lobe on the right lung.
- 7. Protective shield for heart, lungs, and major blood vessels. Located in center of chest.
- 11. Allows for collateral air ventilation to equalize pressure. Located within the walls of alveoli.
- 13. Circulates blood throughout body. Located in the middle of chest.
- 15. Enables smooth efficient breathing. Located within thoracic cavity and surrounding lungs.
- 16. Primary site for gas exchange. Located deep within lungs.
- 18. Distributes oxygen to alveoli and helps remove carbon dioxide. Located deep within lungs.
- 19. Minimizes friction with heartbeats, and prevents excessive filling/dilation. Located in the middle of mediastinum of the chest cavity.
Down
- 1. Produces pleural fluid to reduce lung friction, and provide sensitivity to pain, pressure, and temperature. Lines inner surface of thoracic cavity, and is superior to surface of diaphragm.
- 3. Stabilizes chest wall and helps drive breathing. Located between the 12 pairs of ribs.
- 4. Helps with independent movement of lung lobes. It runs down from the 4th and 5th thoracic vertebral on the left lung.
- 8. Passageway for air to travel to and from lungs. Located in lower neck and upper chest.
- 9. Forces air in and out of lungs. Located in the base of chest.
- 10. Anchors lungs in place. Surrounding heart and roots of vessels.
- 12. Produces pleural fluid to reduce lung friction. It covers the surface of each lung.
- 14. Acts as a conduit for oxygen to enter alveoli and carbon dioxide to leave. Located at the end of the respiratory tree.
- 17. Fights infections and diseases. Located in the upper front part of chest.
- 20. Transports foods and liquids from pharynx to stomach. Located at back of throat and down chest.