Axial Skeleton

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Author:
BodeS
ID:
296054
Filename:
Axial Skeleton
Updated:
2015-02-23 01:07:49
Tags:
Anatomy
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Description:
core of body
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  1. axial skeleton
    core of body
  2. axial skeleton
    5 bones
    • skull
    • vertebra
    • ribs
    • sternum
    • hyoid
  3. vertebra
    Structure?
    Fxn?
    • Structure: vertebral column
    • spinal column
    • spine
    • Fxn:
    • support
    •  -(for body)
    • attachment sites
    •  -(for muscles/ligaments)
    • protection
    •  -(for spinal chord/spinal nerve roots)
  4. free moving vertebra
    • cervical
    • thoracic
    • lumbar
  5. fused vertebra
    • sacrum 
    • coccyx
  6. landmarks on bones
    • muscle attachments
    • bone attachments
    • neural pathways
  7. coccyx 
    male v female
    • Co3- female
    • Co5- male
  8. ID?
    View?
    Names?
  9. ID?
    View?
    Names?
  10. vertebral curvatures 
    primary curvature
    • primary curvature of spina-
    • 3rd trimester
    • anteriorly concave
    • posteriorly concave
  11. vertebral curvature
    secondary curvature
    • practice holding head up
    • anteriorly convex in cervical region
    • finish 2-4 months
  12. vertebral curvatures
    primary and secondary mixed
    • REGION: cervical secondary
    • thoracic primary 
    • lumbar secondary

    • WHEN: 9-11 mo infant
    • lumbar starts to be anteriorly convex
    • ex/: walking
  13. ribs
    fxn?
    structure?
    • fxn: protect heart and lungs
    • structure:
    • 12 pair total
    •  -7 true ribs
    •  -5 false ribs
  14. true ribs
    • pairs #1-7
    • attach directly to sternum
    • by hyaline cartilage
  15. false ribs
    • pairs #8,9,10
    • attach by long cartilage to rib#7, not sternum
    • pairs #11&12
    • floating ribs
  16. sternum
    • clavicular notch (sternoclavicular joint; only axial bone-to-bone connection for upper limb)
    • manubrium
    • corpus 
    • xiphoid
    • hyaline cartilage to connect to ribs
  17. central nervous system
    • CNS
    • brain
    • spinal chord
  18. peripheral nervous system
    • PNS
    • cranial nerves
    • spinal nerves
  19. intervertebral foramen
    spinal nerve
  20. spinal nerves (PNS)
    in cervical region
    spinal nerves are named/numbered for vertebra they emerge superior to
  21. spinal nerves (PNS)
    in thoracic, lumbar, and sacral regions
    spinal nerves are named/numbered for the vertebra they are inferior to
  22. spinal nerves (PNS)
    THE EXCEPTION
    the exception is spinal nerve C8, which emerges between vertebra C7 and T1
  23. typical vertebra
    CERVICAL region
    S.A.T.
    • 1) small oval body 
    • 2) transverse foramina
    • 3) a bifid spinous process
  24. typical vertebra
    THORACIC region
    H.F.A.B.
    • 1) heart shaped body
    • 2) blunt-ended transverse processes that extend posterolaterally 
    • 3) a long, inferior pointing spinous process
    • 4) facets for articulation with the ribs
  25. typical vertebra 
    LUMBAR region
    L.I.T.T.
    • 1) large, kidney-bean shaped body
    • 2) thin, tapering transverse processes
    • 3) thick, blunt-ended spinous process
    • 4) interlocking articular processes
  26. Atypical Vertebra
    • C1 atlas- 
    • C2 axis-
    • L5 (no name)-
  27. Atypical Vertebra
    C1
    • atlas
    • no body
    • no spinous process
    • holds up skull
  28. Atypical Vertebra
    C2
    • axis
    • additional thing "the dens" or odontoid process
    • forms axis for C1 to rotate around in
  29. Atypical Vertebra 
    ID?
    Processes A & B?

    • ID: L5
    • transverse process attaches to body
    • carries entire upper body weight
    • transfers it to pelvis
    • Processes:
    • A) pedicle
    • B) transverse process
  30. ID?
    View?
    Parts?
    • superior view
    • ala (alae pl.) -wings
    • S1- body
    • Sacral Canal

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