Biology Lesson 7.3

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Biology Lesson 7.3

  1. 1. Lesson 7.3Four categories of bones basedon shape:1.Long bones – longer than they are wideExample: femur
  2. 2. Four categories of bones based on shape:1. Long bones2.Short bones – like long bonesbut smallerExample: metacarpals
  3. 3. Four categories of bones based on shape:1. Long bones2. Short bones3.Flat bones - are flatExamples: ribs, bones of craniumUsually protective in nature
  4. 4. Four categories of bones based on shape:1. Long bones2. Short bones3. Flat bones4. Irregular bones – shape does not fit into other three categoriesExample: vertebrae
  5. 5. :Four categories of bones based on shape5th type - sesmoidWhere tendon passes overjoint.Ex. Patella
  6. 6. Parts of a long bone:Diaphysis – shaft of theboneEpiphysis – ends of thebone or bulged ends
  7. 7. Parts of a long bone:•Diaphysis•EpiphysisPeriosteum – protectivecovering or sheath thatsurrounds the bone andcontains blood vessels tonourish the bone cells
  8. 8. Types of bone tissue:1. Compact bone • Solid matrix, very dense • Makes up 80% of skeleton • Forms a shell around cancellous bone • Primarily in diaphysis
  9. 9. Types of bone tissue:1. Compact bone2. Spongy bone •found primarily in the epiphysis and medullary cavity •light weight and porous (spongy in appearance) • allows for the location of red blood cells and white blood cells to be made
  10. 10. Medullary cavity – core of the shaft is a cavitythat as a child houses red marrow and as adults houses yellowmarrow (fat).
  11. 11. 1. Hydroxyapatite 12. Slows2. Calcium 13. Calcium3. Collagen 14. Leafy4. Protein 15. Rickets5. Steel 16. Osteomalacia6. Maintaining 17. Bone7. Repairing 18. Adjust8. Modifying 19. Stress9. Osteoclast 20. Ossification10. Haversian canals 21. Sternum11. osteoblast 22. 25
  12. 12. 23. Fracture24. Cleanly25. Greenstick26. Twisted27. Shattered28. Fractures29. Skin30. Compound31. Hematoma32. Osteoblast33. Reconstruct
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