Back layer 4, 5
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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Splenius capitis OIIA | O: Ligamentum nuchae, SP C7-T3
I: Lteral 1/3 superior nuchal line and mastoid process
I:dorsal rami C1-T1
A: B/L Head ext., U/L ipsilateral lateral flexion and rotation
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Splenius cervisis OIIA | O: SP T3-T6
I: TP C1-C3
I: dorsal rami lower C/S nerves
A: B/L neck ext. U/L ipsilateral lateral flexion and rotation
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Illiocostalis Lumborum OI | O: Common tendon of erector spinae, illiac crest
I: INferior borders ribs 6-12 at rib angles
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Illiocostalis thoricis OI | O: Superior borders of ribs 6-12 at angles
I: ribs 1-6 at angles, TP C7
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Illiocostalis Cervisis OI | O: 3-6 ribs at angles
I: Posterior tubricles of TP C4-C6
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Illiocostalis actions are? | B/L spinal ext, maintain post. U/L ipsilateral lateral flexion
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Longissimus Thoracis OI | O: Common tendon of erector spinae, TP L1-L5, accessory process L1-L5
I: TP T1-T12, 3-12 ribs medial cartilage
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Longissimus Cervicis OI | O: TP T1-T5
I: posterior tubricles TP C2-C6
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Longissimus capitis OI | O: TP T1-T5
I: Posterior margin mastoid process
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Longissimus muscles action is? | B/L spinal ext (cervicis & thoricis) U/L lateral flextion.
Capitis B/L extends the head, U/L ipsilateral rotation
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All of the erector spinae muscles are layer? | Layer 5
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All of the muscles in layers 4 and 5 are? | Intrinsic muscles, move spine
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Spinalis thoricis OI | O: SP T11-L2
I: SP T1-T4
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Spinais cervicis OI | O: Ligamentum nuchae, SP C7-T2
I: SP C2-C4
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Spinalis capitis OI | O: SP lower C/S and upper T/S
I: Between inferior and superior nuchal lines
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Spinalis actions are? | B/L spinal and head ext
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Erector spinae muscles go in what order from lateral to medial? | Illiocostalis, Longissimus, Spinalis
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Erector spinae muscles are all innervated by? | dorsal rami in area
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hopper
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