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Across 3. Inactive bone cell 4. Type of vessels that inhibit the the new tissue 5. Type of bone that is later filled completely in to form compact bone 7. Type of tissue that arranges itself around layers to form osteoblasts and enlarges to destroy surrounding tissue 8. Osteoblasts surround themselves in ___________ and become osteocytes (2) 10. Endochondral ossification ossification would target ___ bones 12. Vascular connective tissue that envelops bones except at the joints 14. Firm, flexible, tissue that is connected to the bone and replaced during bone growth 15. Ossification that occurs to replace old bone in long bones 16. Where intramembranous ossification occurs (2) 18. Connective tissue enlarges and ___________ surrounding tissue in endochondral ossification

Down 1. Where endochondral ossification occurs (2) 2. What is taken from the blood stream to form bones 5. Most common flat bone for intramembranous ossification to occur 6. Ossification that creates new bone around bones like the skull 9. Which type of osteogenesis takes calcium from bloodstream and uses osteoblasts to form bone matrix 10. What is the development of bones called 11. Takes calcium from bloodstream to form the bone 13. Forms on outside of bone in endochondral ossification 14. Type of bone that is formed when spongy bone is completely filled out 17. How many types of osteogenesis are there?