muscle21

Card Set Information

Author:
Anonymous
ID:
110222
Filename:
muscle21
Updated:
2011-10-19 11:51:36
Tags:
muscles 21
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Description:
muscle21
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  1. trapezius action
    • extends head; upper elevates
    • while lower depresses scapula
  2. trapezius origin
    • occipital bone
    • vertebral spines of
    • cervical and thoracic vertebrae
  3. trapezius insertion
    acromion and spine of scapula (R&L)
  4. external intercostal-action
    • elevates rib cage
    • aids in inspiration
  5. external intercostal-origin
    inferior border of superior rib above
  6. external intercostals-insertion
    superior border of inferior rib below
  7. internal intercostals-action
    • depresses rib cage
    • aids in expiration
  8. internal intercostals-origin
    superior border of inferior rib below
  9. internal intercostals-action
    inferior border of superior rib above
  10. diaphragm-action
    inspiration
  11. retus abdominis-action
    • flexes vertebral column
    • increases abdominal pressure
  12. retus abdominis-origin
    • pubic crest of pubic bone
    • pubic symphysis between pubic bone
  13. rectus abdominis-action
    xiphoid process of sternum

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