RESPIRATORY SYSTEM ANATOMY

5. A structure formed by the ribs, which surrounds and protects the chest cavity and its organs, such as the heart and lungs.
6. The main air passages in the lungs that branch off from the trachea.
10. Smaller branches of the bronchi that further divide into tiny airways in the lungs.
11. A tube connecting the throat to the lungs for air passage.
12. The process of breathing in air or drawing air into the lungs.
13. A dome-shaped muscle beneath the lungs that helps with breathing by contracting and expanding the chest cavity.

1. The circulation of blood between the heart and the lungs before returning to the heart. (9,11)
2. A flexible and connective tissue found in various parts of the body, such as the joints, ears, and nose, providing support and cushioning.
3. Tiny air sacs in the lungs where oxygen and carbon dioxide are exchanged.
4. Relating to the process of breathing or the organs involved in breathing, such as the lungs, trachea, and diaphragm.
7. Microscopic blood vessels in the lungs where oxygen is exchanged for carbon dioxide with the surrounding air sacs (alveoli).
8. Organs in the chest that help us breathe by exchanging oxygen and carbon dioxide.
9. To fill with air or expand, often referring to the act of expanding the lungs by drawing in air during inhalation.
11. The chest region of the body, containing the heart, lungs, and other vital organs.