supraspinatus + infraspinatus

The exercise was created 2025-08-15 by modigamodi. Question count: 11.




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  • supraspinatus and infraspinatus 2 out of 4 rotator cuff muscles
  • Supraspinatus origin supraspinatus fossa
  • Supraspinatus insertion Greater tubercle of the humerus
  • Supraspinatus blood supply suprascapular A + circumflex scapular A
  • Supraspinatus innervation suprascapular N
  • Supraspinatus action initates the abduction of arm up to 15 degrees + stabilizes the head of humerus in the glenoid cavity
  • Infraspinatus origin infraspinatus fossa
  • Infraspinatus insertion middle facet of greater tubercle of humerus
  • Infraspinatus blood supply suprascapular A
  • Infraspinatus innervation Suprascapular N
  • Infraspinatus action Laterally rotation of arm at shoulder joint + stabilizes the humeral head in glenoid cavity

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