Axial Skeleton

The flashcards below were created by user roosh17 on FreezingBlue Flashcards.

  1. What comprises the axial skeleton?
    Skull, thoracic cage, vertebral column, supplemental cartilages
  2. Fxns of vertebral column (24 vertebrae, sacrum, coccyx)
    • provides column of support
    • transfers weight to lower limbs
    • protects spinal column
    • helps maintain upright position
  3. Order or spinal curves
    (from head to coccyx)
    • Cervical
    • Thoracic
    • Lumbar
    • Sacral
  4. Primary spinal curves
    • Thoracic- for thoracic organs
    • Sacral- for abdominopelvic organs
    • Forms "C" curve before birth
  5. Secondary spinal curves
    • Cervical- develops as infant balances head on vertebrae
    • Lumbar- develops with ability to stand and balance trunk over limbs
    • Importance- develop with balance
  6. Major components of vertebra
    • Articular processes
    • Vertebral body
    • Vertebral arch
    • Vertebral foramen
  7. Parts of vertebral arch
    spinous process, L&R laminae, transverse process, pedicles

    insert pic from lecture
  8. Cervical vertebrae char
    • smallest of vertebral column
    • large vertebral foramen
    • also might have split or bifid spinous process
  9. First 2 cervical vertebra are unique!
    • Atlas- (C1) no spinous process, no vertebral body, large round vertebral foramen
    • Axis- (C2) prominent dens or odontoid process
    • Thinking of a globe-> Axis holds atlas
  10. Thoracic vertebrae char
    • moving inferiorly, body of each is more robust due to bearing of increasing weight
    • distinctive heart shaped vertebral body
    • smaller vertebral foramen
    • long, slender, inferiorly pointing spinous process
  11. Lumbar vertebrae char
    • largest and transmit most weight
    • no costal facets (b/c no ribs at this level)
    • slender transverse processes
    • triangular vertebral foramen
  12. Sacrum
    • part of primary curve
    • 5 fused vertebrae, triangular shaped
    • completely fused by 30 yrs old
  13. Coccyx
    • part of primary sacral curve
    • 3-5 fused vertebrae
    • begin fusing at age 2->18ish
Card Set:
Axial Skeleton
2013-06-12 21:04:40
vertebral axial skeleton

Typically 80 bones including skull, thoracic cage, vertebral column, various bones and cartilages
Show Answers: