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FAB - Back Layers

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Question
Answer
What muscles are in the 1st layer?   Trapezius & Latissumus dorsi  
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What muscles are in the 2nd layer?   Levator Scapula; Rhomboid major& minor  
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What muscles are in the 3rd layer?   Serratus posterior superior & inferior  
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What muscles are in the 4th layer?   Splenius capitis & cervicis  
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What muscles are in the 5th layer?   3 Iliocostalis, 3 Longissimus, 3 Spinalis  
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What muscles are in the 6th layer?   3 Semispinalis, 3 Multifidis, 3 Rotatores  
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What are the 3 Iliocostalis muscles?   Lumborum, Thoracis, Cervicis  
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What are the 3 longissimus muscles?   Thoracis, cervicis, capitis  
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What are the 3 spinalis muscles?   Thoracis, cervicis, capitis  
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What are the 3 semispinalis muscles?   Thoracis, cervicis, capitis  
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What are the 3 multifidus muscles?   lumborum, thoracis, cervicis  
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What are the 3 rotatores muscles?   lumborum, thoracis, cervicis  
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Serratus Posterior Superior O   Lower portion of ligamentum nuchae, SP of C7-T3, supraspinous ligaments  
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Serratus Posterior Superior I   ribs 2-5  
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Serratus Posterior Superior N   Ventral rami T2-T5  
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Serratus Posterior Superior A   Elevates ribs 2-5  
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Serratus Posterior Inferior O   SP  
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Serratus Posterior Inferior I   ribs  
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Serratus Posterior Inferior N   Ventral rami of T9-T12  
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Serratus Posterior Inferior A   Depress ribs 9-12, aids respiration  
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Splenius capitis O   SP  
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Splenius capitis I   Mastoid process; temporal bone; occiput below lateral part of superior nuchal line  
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Splenius capitis A   Extend head bilaterally; lateral flex and rotate face to same side, unilaterally  
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Splenius capitis N   lat. branches of dorsal rami of C5-C7  
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Which back muscles are "Erector spinae muscles"?   Iliocostalis lumborum,  
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Erector spinae muscles common origin   SP and supraspinous ligament of T11-L5; median sacral crest; sacrotuberous ligament; posterior sacroiliac ligament; lateral sacral crest; posteromedial iliac crest  
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Erector spinae muscles   5th layer  
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Splenius cervicis O   SPs  
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Splenius cervicis I   TPs  
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Splenius cervicis A   extend neck bilaterally; unilaterally lateral flex and rotate face toward same side  
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Splenius cervicis N   lat. branches of dorsal rami of C5-C7  
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Iliocostalis lumborum O   common origin of erector spinae muscles  
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Iliocostalis lumborum I   ribs  
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Iliocostalis thoracis O   ribs  
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Iliocostalis thoracis I   ribs and TP of C7  
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Iliocostalis cervicis O   ribs  
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Iliocostalis cervicis I   TP  
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Longissimus thoracis O   Common origin of erector spinae; TP's and AP's of Lumbar vertebrae  
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Longissimus thoracis I   3rd-12th ribs; TPs  
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Longissimus cervicis O   TPs  
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Longissimus cervicis I   TPs and APs  
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Longissimus capitis O   TPs; APs  
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Longissimus capitis I   mastoid process temporal bone  
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Spinalis thoracis O   SPs  
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Spinalis thoracis I   SPs  
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Spinalis cervicis O   SPs  
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Spinalis cervicis I   SPs  
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Spinalis capitis O   TPs ; APs , sometimes SP of C7 & T1  
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Spinalis capitis I   Occiput btwn superior and inferior nuchal lines  
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Action of Iliocostalis and Longissimus muscles   Extend and laterally flex spine.  
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Nerves of Erector spinae muscles   Dorsal rami  
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Action of spinalis thoracis and cervicis   Extend spine  
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Action of spinalis capitis   extend head  
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