Anatomy crossword

1. Cluster of alveoli sharing a common opening at the end of a duct.
4. Diagonal groove separating lobes of the right lung.
5. Tiny air sacs where oxygen and carbon dioxide are exchanged with blood.
7. Final airway of the conducting zone that leads into gas-exchange structures.
11. Broad, inferior surface of the lung resting on the diaphragm.
13. Immune organ in the chest, prominent in youth, located near the trachea.
15. Small openings that allow air movement between adjacent alveoli.
16. Small passageway connecting respiratory bronchioles to clusters of alveoli.
17. Windpipe; rigid airway that carries air from the larynx to the bronchi.
18. The pointed top portion of the lung extending above the clavicle.
19. Muscular organ between the lungs that pumps blood through the body.
20. Dome-shaped muscle below lungs essential for breathing movements.

2. First airways where gas exchange begins; branch off terminal bronchioles.
3. Middle section of the right lung, unique to that side.
6. Lower section of the left lung beneath the oblique fissure.
8. Slanted division separating the two lobes of the left lung.
9. Upper section of the right lung, separated by fissures.
10. Line dividing the right lung’s superior and middle lobes.
12. Tube-like structure lined with alveoli, directing air deeper into the lung.
14. Single microscopic air sac specialized for gas diffusion.