Skeletal System 1/10/13

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Skeletal System 1/10/13
2013-01-17 17:42:19
Anatomy Physiology

Anatomy and Physiology
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  1. Describe the skeletal system
    1. The skeleton is a solid, movable framework that supports the body

    2. Bones work as levers to anchor plates to allow for movement

    3. Bones also work for other body systems

    4. The body draws from mineral stores in bones during times of shortage
  2. Name theĀ components of the skeletal system
    Axial skeleton

    AppendicularĀ skeleton
  3. Name the parts of the Axial Skeleton
    • Skull
    • Hyoid bone
    • Vertebrae
    • Ribs
    • (superior to inferior)
  4. Name the parts of the appendicular skeleton
    Pectoral girdle

    Pelvic girdle
  5. How many vertebrae and divisions in the vertebral column?
    • 33 vertebrae in 5 divisions
    • Each vertebra has a letter and a number designation
  6. Name the 5 divisions of the vertebral column
    • Cervical vertebrae (C1-C7)
    • Thoracic vertebrae (T1-T12)
    • Lumbar vertebrae (L1-L5)
    • Sacral vertebrae (S1-S5) fused into sacrum
    • Coccygeal vertebare (4) fused into coccyx

    The higher up the injury, the more you lose.
  7. Cervical vertebrae
    C1 - C7

    • C1 = atlas supports the skull for rotation
    • C2 = axis allows the skull to pivot

    • It has:
    • Spinous Processes except C1 and C2-rudimentary spinous process
    • Transverse Processes
    • Transverse foramina are present only in the cervical vertebrae
    • Corpus
    • Vertebral foramen
    • Intervertral foramina
    • Superior articular facet
    • Inferior articular facet
  8. Thoracic Vertebrae

    Basis for respiratory framework

    Form the posterior point of attachment for the ribs of the body thorax

    Correspond to each pair of ribs

    Between the vertebrae are the intervertebral foramina which are formed by the inferior and superior notches of articulating vertebrae.

    Superior/inferior costal facets

    Larger spinous and transverse processes
  9. Lumbar Vertebrae

    Spinal cord ends in the lumbar

    Larger muscle attachments - bigger body (corpus) walking, lifting.

    Provide direct or indirect attachment for many of the back and abdominal muscles and posterior fibers of the diaphragm

    Transverse spinous processes smaller

    Corpus larger
  10. What are the primary and secondary curves?
    • Primary:
    • develop in the womb
    • thoracic
    • sacral

    • Secondary:
    • cervical-develops when the infant begins to lift his/her head

    lumbar-develops when the child begins to stand and walk
  11. What are the componentsĀ of the pectoral girdle?
    Supports the upper extremities.


  12. What are the components of the pelvic girdle?
    Supports the lower extremities.

    Lower extremities attach to AXIS by means of pelvic girdle.

    • Llium
    • Sacrum (is not part of the appendicular skeleton)
    • Pubic bone
    • Ischium
  13. Disorders of the skeletal system
    bone and joint disorders