Across
- 6. Matures, trains, and selects T-Cells
- 8. Directly inferior to the heart and deep to the ribcage
- 11. Pulls air out of lungs and forces air into lungs
- 12. Cluster of sacs that conduct gas exchange
- 14. Pumps blood throughout the body
- 15. Surrounds the heaart and reduces friction during its contraction
- 16. Right of the spinal cord and deep to the rib cage
- 17. Rounded tip at the top of both lungs
- 18. Transports elements from pharynx to stomach
- 19. Produces fluid that enables frictionless lung movement
Down
- 1. Forms base of the left lung; separated from the upper lung by the oblique fissure
- 2. Carries deoxygenated blood away from the heart
- 3. Air sack; Primary site of gas exchange
- 4. Midline of the body; protects heart and lungs
- 5. Houses the thymus gland and lymph nodes
- 7. Distribute oxygen-rich air to the alveoli
- 9. Protective enclosure for thoracic organs
- 10. Cleans, warms and moistens air before it reaches the lungs
- 13. Expands and compresses the thoracic cavity to drive breathing
- 15. Friction-free space between lungs and chest wall