Skeletal System
Across
- 2. have greater length than width and consist of a shaft and variable number of ends
- 4. a thin membrane that lines the medullary cavity
- 5. a thin layer of hyaline cartilage covering the part of the epiphysis where the bone forms an articulation (joint) with another bone
- 7. mature bone cells that are the main cells in bone tissue and maintain its daily metabolism
- 9. consists of the bones that lie around the longitudinal axis of the human body
- 10. the site of the growth plate; once bone growth in length stops, the epiphyseal line is the bony structure that replaces the cartilage that was once present
- 13. consists mainly of adipose cells, which store triglycerides
- 16. cells that digest protein and mineral components of bone extracellular matrix (resorption) which is part of the normal development, growth, maintenance, and repair of bone
- 19. "soft spots" that are found between cranial bones at birth
- 20. bone-building cells
- 21. the distal and proximal ends of the bone
- 22. the removal of minerals and collagen fibers from bone by osteoclasts
- 24. the process by which bone tissue hardens
- 26. process of producing red blood cells, white blood cells, & platelets
- 27. regions in a mature bone where the diaphysis joins the epiphysis
- 29. have complex shapes and cannot be grouped into any other bone categories
- 30. the addition of minerals and collagen fibers to bone by osteoblasts
- 31. produces red blood cells, white blood cells, & platelets
Down
- 1. loss of bone minerals
- 3. any break in a bone
- 6. an immovable joint, which in most cases in an adult holds the skull bones together
- 8. a hollow, cylindrical space within the diaphysis that contains fatty yellow bone marrow in adults -- also known as the marrow cavity
- 11. somewhat cube-shaped and nearly equal in length and width
- 12. the process by which bone forms
- 14. contains the bones of the upper and lower limbs, or appendages, that connect the limbs to the axial skeleton
- 15. unspecialized stem cells that are the only bone cells to undergo cell division
- 17. generally thin, provide considerable protection, & provide extensive surfaces for muscle attachment
- 18. contains few spaces and is arranged in repeating structural units called osteons
- 23. the bone's shaft or body -- the long, cylindrical, main portion of the bone
- 25. does not contain osteons; is composed of irregular latticeworks of thin columns of bone
- 28. a tough sheath of dense irregular connective tissue & its associated blood vessels that surrounds the bone surface wherever it is not covered by articular cartilage