Across
- 3. A set of muscles that oppose movements.
- 6. Increased pressure is _______ pressure.
- 7. This is also known as the "windpipe."
- 9. This vertebrae reflects the stress placed on these for lifting and walking.
- 10. The cells are spread out in this type of tissue; most abundant type of tissue.
- 12. The upper respiratory tract is composed of the nasal cavity, oral cavity, pharynx, and this.
Down
- 1. This substance that is secreted inside the Type II pneumocyte reduces surface tension and gives lubrication.
- 2. These of the lungs are the most dense in the body.
- 4. This type of tissue is very strong and elastic.
- 5. The 3 classes of ribs are true ribs, false ribs, and these type of ribs.
- 8. This is composed of fused coccygeal vertebrae.
- 11. Ribs attach at the _____ spots.