Across
- 3. what hold bones together
- 4. tough connective tissue
- 7. progression from birth to death
- 8. tubes that carry blood in the body
- 9. firmness or tightness
- 10. cells that act together to perform a specific function
Down
- 1. a cell formed when combining reproductive cells
- 2. tissues that cover the external and internal organs of the body
- 5. the central structures of the body
- 6. formed by putting many parts together