Second Order: Rotator Cuff Muscles

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  1. Supraspinatus
    Origin:
    medial 2/3 supraspinous fossa of scapula
  2. Supraspinatus
    Insertion:
    greater tubercle of humerus
  3. Supraspinatus
    Action:
    initial 10-15 degrees of GH joint abduction; stabilizes head of humerus in glenoid (compression)
  4. Supraspinatus
    Innervation:
    suprascapular
  5. Infraspinatus
    Origin:
    medial 2/3 of infraspinaous fossa of scapula
  6. Infraspinatus
    Insertion:
    greater tubercle of humerus
  7. Infraspinatus
    Action:
    external rotation of humerus, stabilizes head of humerus in glenoid, downward glide of head of humerus
  8. Infraspinatus
    Innervation:
    suprascapular
  9. Teres Minor
    Origin:
    upper 2/3 and dorsal surface of lateral border of scapula
  10. Teres Minor
    Insertion:
    greater tubercle of humerus
  11. Teres Minor
    Action:
    external rotation of humerus, stabilizes head of humerus in glenoid, downward glide of head of humerus
  12. Teres Minor
    Innervation:
    axillary
  13. Subscapularis
    Origin:
    subscapular fossa of scapula
  14. Subscapularis
    Insertion:
    lesser tubercle of humerus
  15. Subscapularis
    Action:
    internal rotation of humerus, stabilizes head of humerus in glenoid, downward glide of head of humerus
  16. Subscapularis
    Innervation:
    subscapular

Card Set Information

Author:
 brau2308
ID:
 166346
Filename:
 Second Order: Rotator Cuff Muscles
Updated:
2012-08-17 03:36:54
Tags:
human movement origin insertion action innervation rotator cuff
Folders:

Description:
review of second order for human movement quiz
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