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Part 1 - Remember the structures of the skeletal system

Part 1 - Remember the structures of the skeletal system. What do you know?. Essential Questions. What is the process of ossification and its relationship to bone formation? How do we know ossification occurs? What is an example of ossification?. What is the process of bone formation ?.

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Part 1 - Remember the structures of the skeletal system

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  1. Part 1 - Remember the structures of the skeletal system

  2. What do you know?

  3. Essential Questions • What is the process of ossification and its relationship to bone formation? • How do we know ossification occurs? • What is an example of ossification? • What is the process of bone formation?

  4. What are the structures of the long bones? • What are the structures of the skeletal system?

  5. Bone formation Bones consist of microscopic mature bone cells Bone marrow Oste/o/cytes Osteo = bone Cyte = cell

  6. Ossification… • occurs when minerals replace previously formed cartilage and while long bones are growing in length • As bones ossify, they become hard • The ossification process begins from the center of a bone and moves to the ends of the bone • Infants bones are soft and pliable because of ‘incomplete ossification’

  7. Example of Ossification The soft spot on a baby’s head called, the fontanel is a familiar example of where bone has not formed yet, although it will over time, as well as become hardened.

  8. Types of Bones Long Flat Irregular Short (Cuboid)

  9. Long bones • Found in the arms • and legs

  10. Structures of long bones

  11. Spongy bone vs Compact bone

  12. Compact Spongy More surface area than compact allowing bone marrow development Calcium is less available and makes it weaker Less Ca makes it a prime target for fracture • Support and strength to entire body • Stores calcium for hardening bone

  13. Flat bones • Bones of the skull • Ribs http://pikdit.com/i/visible-working-lung-through-exposed-ribcage-relatively-clean-but-definitely-nsfw/

  14. Irregular bones • Spinal column

  15. Wrist • (Rt or Lt ?) Short bones(cuboids) Ventral view (think anatomical position)

  16. Axial Skeleton Skull Spinal column Ribs Sternum Hyoid

  17. Skull frontal view

  18. Skull lateral view

  19. Hyoid Bone • What is unique about the hyoid bone?

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