Structures of the Respiratory System
Across
- 6. Flap of cartilage that directs material down either the larynx or esophagus.
- 8. Intercostal muscles that contract to increase the volume of the thoracic cavity.
- 11. Short cartilaginous tube that contains the vocal folds/cords.
- 14. Structure that connects the bronchioles to the alveoli.
- 17. Tube of cartilage and smooth muscle that connects the upper airway to the lungs.
- 18. The trachea splits into the primary ____ that direct air into the right and left lobes of the lungs.
- 20. The lung is split into two ____.
Down
- 1. Structure that contains three pairs of tonsils.
- 2. Muscle that forces air out of the lungs when it relaxes into a dome-shape.
- 3. Normal point of entry for air into the body when an individual is at rest (two words w/ no space).
- 4. Intercostal muscles that contract to decrease the volume of the thoracic cavity.
- 5. Cluster of lymphatic tissue that are involved in the body's immune response.
- 7. Epithelial cells that secrete mucus.
- 9. The smallest airways of the respiratory tract with a diameter of 1 mm or less.
- 10. Common name for the thyroid cartilage of the larynx (two words w/ no space).
- 12. Pair of air-filled organs contained within the pleural cavity.
- 13. Curved bone structure of the nasal cavity that produce turbulent air flow.
- 15. Contraction of the ______ muscles pushes the diaphragm upward during forced expiration.
- 16. Type of connective tissue that receives no direct blood supply.
- 19. Site of gas exchange between the respiratory and circulatory systems.