Across
- 1. Bones are classified as one of four types on the basis of this.
- 5. This is necessary for bone growth, repair, & nutrition.
- 6. The spinal nerves enter & leave the spinal cord through openings called this.
- 7. The last two pair of ribs are called _______ ribs.
- 9. The spine consists of small bones called this.
- 12. The cranium houses and protects this delicate organ.
Down
- 2. This cartilage acts as a shock absorber between two bones that meet to form a joint.
- 3. This is a U shaped bone in the neck to which the tongue is attached.
- 4. Only humans and other primates possess such a digit, known as an _______ thumb.
- 8. Throughout life, bone is constantly renewed through a process called this.
- 10. During bone formation, new bone tissue is laid down by these replacing old bone tissue.
- 11. The skull contains large spaces within the facial bones, referred to as ________ sinuses.