Skeletal System Puzzle

ACROSS

1. Another word for enlargement.
3. The shaft of the bone.
7. Blood vessels from the periosteum enter the bone through ____ canals which run perpendicular to the long axis of the bone.
9. The hormone that inhibits osteoclast activity, thus causing calcium to be stored in the bone.
11. When long bone growth stops the epiphyseal plate become a ______.
12. The name of the ossification center that forms in the center of the diaphysis.
14. A membrane that lines the inner surface of the medullary cavity.
16. Part of the skeleton that is made up of the skull, vertebral column and thorax.
17. The central canals are surrounded by ____ lamellae.
18. Fracture that has rough toothed broken ends.
20. Bones with relatively flattened shape are grouped as ___ bones.
21. Type of fracture in which the bone breaks into more than 2 pieces.
23. Group of hormones produced during puperty that cause the “growth spurt.”
25. The type of ossification that occurs in cartilage of long bones.
28. Type of bones that are longer than they are wide.
29. The type of ossification that occurs in the flat bones of the fetus.
30. An incomplete fracture that occurs on the convex side of bones especially of children.
31. The type of fracture that has a helical course around the bone.
32. Name of double layer of connective tissue membrane that covers the outer surface of bones.
34. Another name for spongy bone.
36. Hormone that stimulates the epiphyseal plate for long bone growth.
41. A tissue that forms in the fracture at the beginning of bone repair is called a fibrocartilage ______.
43. The basal metabolism hormone that is necessary for tissue growth.
44. Mature bone cells found in lacunae.
46. The _____ cavity makes up the central portion of the diaphysis.
47. The type of fracture that has the bone protruding through the skin.
48. Young bone producing cells.
49. Type of marrow where hematopoiesis occurs.
50. Ossification centers found in the epiphyses.
51. General name given to a break in a bone.

DOWN

1. Another name given to the central canal of compact bone.
2. Another name given for the calcification of bone.
4. This hormone stimulate osteoclast activity to release calcium into the blood stream.
5. The type of marrow that is mostly adipose tissue found in medullary cavity.
6. Type of fracture that has breakage line radiating from a central point.
8. Bone matrix is organized into thin sheets or layers called