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Back muscles

Discussion in 'NBDE Exams & Licensure Exams' started by JM7, Jul 17, 2006.

  1. JM7

    JM7 Junior Member
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    Are rhomboids & levator scapulae "superficial extrinsic back muscles" or "intermediate extrinsic back muscles"???? Is there a difference between "intermediate extrinsic back muscles" and "deep extrinsic back muscles"????
     
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  3. JM7

    JM7 Junior Member
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    ??????????????
     
  4. Jo23

    Jo23 Member
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    The 3 groups of back muscles are organized in layers: superficial, intermediate, and deep.
    Muscles of the superficial and intermediate groups are called extrinsic back muscles because they are involved in respiration and movements of the upper extremity. Muscles of the deep group are called intrinsic back muscles because they are involved in movement and stabilization of the vertebral column.
    Superficial layer:
    -trapezius
    -latissimus dorsi
    -levator scapulae
    -rhomboid major+minor

    Intermediate layer:
    -serratus

    Deep:
    -errector spinae
    -transversospinalis
    -splenius
    -suboccipital muscles

    Hope this helps.
     
  5. JM7

    JM7 Junior Member
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    thanks for the reply. rhomboids major+minor are underneath trapezius. Aren't they part of the intermediate layer? I still think "deep extrinsic" is the same as "intermediate extrinsic." What does everyone else think?
     
  6. JM7

    JM7 Junior Member
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