Across
- 3. The lower respiratory tract consists of the trachea, primary bronchi, and this.
- 6. This type of pressure is the point of reference when discussing respiration.
- 7. A set of muscles that oppose movements.
- 12. This is the subdivision of the total amount of air the lungs can contain.
- 13. This is composed of fused coccygeal vertebrae.
- 15. The upper respiratory tract is composed of the nasal cavity, oral cavity, pharynx, and this.
- 16. This type of tissue is very strong and elastic.
- 18. This type of lining covers the lungs and allows for smooth contact for rough lung tissue.
- 20. This substance that is secreted inside the Type II pneumocyte reduces surface tension and gives lubrication.
Down
- 1. Blood flow to lung capillaries.
- 2. This leads to the digestive system and opens for food.
- 4. The cells are spread out in this type of tissue; most abundant type of tissue.
- 5. Increased pressure is _______ pressure.
- 8. This vertebrae reflects the stress placed on these for lifting and walking.
- 9. Conducting airways grow in diameter and length until the _____ reaches its adult size.
- 10. This type of volume is the amount of air remaining in the lungs after a forced exhalation.
- 11. These of the lungs are the most dense in the body.
- 14. Ribs attach at the _____ spots.
- 17. This is also known as the "windpipe."
- 19. Air molecules will flow from areas of high concentration to areas of low concentration to maintain _______.
- 21. The 3 classes of ribs are true ribs, false ribs, and these type of ribs.