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Classification and Structure of Bones

Classification and Structure of Bones. Goals for Today. Learn about skeletal support system Learn about the 4 bone groups Learn about bone structure Learn about bone markings and their functions. Pg. 78. Support System. Cartilage - gel-like matrix with fibers (EX:collagen)

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Classification and Structure of Bones

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  1. Classification and Structure of Bones

  2. Goals for Today Learn about skeletal support system Learn about the 4 bone groups Learn about bone structure Learn about bone markings and their functions

  3. Pg. 78 Support System Cartilage - gel-like matrix with fibers (EX:collagen) - chondrocyte (Cartilage) cells Bone - matrix filled with calcium salts - rigid = calcium salts - flexible = collagen matrix - osteocyte cells

  4. Activity 3 – Heat and HCl on Bones Heat – dries the organic matrix of the bone What will happen? Vinegar – removes calcium salts from bone What will happen?

  5. Hyaline - sturdy support w/ some “give” - EX: nose, trachea, ribs • Elastic • flexible • lots of elastin fibers • - EX: epiglottis, ear • Fibrocartilage • resists compression • EX: intervertebral disks Be able to give examples

  6. Cartilage is your Friend !! Infant Adult

  7. The 4 Bone Groups Long Bones – longer than wide. EX: femur, humerus Short Bones – cube-shaped. EX: tarsals, carpals Flat Bones – thin and flattened. EX: skull, ribs Irregular Bones – “other bones” EX: vertebrae

  8. Pg. 75 Pg. 75

  9. Epiphyseal Plate (Growth)

  10. Central Canal w/ blood vessels, nerves Osteon Lacunae w/ bone cells

  11. Bone Markings Vessel Passage Muscle Attachment Joints

  12. Tuberosity Crest

  13. Head Condyle

  14. Spine Foramen

  15. To Do List • Learn to categorize bones into the 4 groups • Examine femur cross-section. Identify the parts • Look at bone slide. Identify parts • Learn bone marking vocabulary. Identify each • marking on an actual bone • 5. Look at vinegar and heat-treated bones.

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