skeletal system :)

1. fancy word for breaking down bone; performed by the osteoclast (start with letter R)
6. ______ hormone (aka PTH); activates osteoclasts to RAISE Ca levels in the blood
7. this hormone REDUCES Ca levels in the blood
10. ________ ossification center; responsible for developing bone and medullary cavity in the diaphysis of a bone during endochondral ossification
12. in a long bone, hyaline cartilage can be found in the epiphyseal plate AND as _________ cartilage on the ends of bones to prevent bone abrasion
15. bone cell that builds up bone
16. ___________ growth; this type of growth occurs on the surface of the bone and makes the bone wider
18. _________ ossification; occurs for most of skeleton during fetal development and requires a cartilage skeleton base

2. bone cell that breaks down bone
3. these cells (located in the thyroid gland) secrete calcitonin
4. found on the "stem" or middle part of a long bone; filled with compact bone and medullary cavity
5. ___________ growth; this type of growth occurs to expand the epiphyseal plate and make the bone longer
8. mature bone cell that detects for physical stress and strain
9. ___________ ossification; occurs for only flat bones in skull and scapula during fetal develop and does not require a cartilage skeleton base
11. mineral salts made of calcium phosphate crystals that makes up inorganic material of bone
13. ______'s law; bone is remodeled in response to mechanical stress
14. ____ bone; this type of bone is developed during intramembranous ossification. this type of bone matures into lamellar/compact bone
17. classification of bones in vertebrae and hip