MSAK1 - Transversospinalis and Segmented muscles of the back

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agatton
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3958
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MSAK1 - Transversospinalis and Segmented muscles of the back
Updated:
2010-01-13 22:40:54
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MSAK Muscles WCCMT
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Transversospinalis group and segmented muscles of the back
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  1. Semispinalis Thoracis
    • TPs of T6-10
    • SPs C6-T4
    • EXTENDS, LATERALLY FLEXES and CONTRALATERALLY ROTATES the trunk and neck at the spinal jts
    • Dorsal Rami of Spinal Nerves
  2. Semispinalis Cervicis
    • TPs of T1-5
    • SPs oC2-5
    • EXTENDS, LATERALLY FLEXES and CONTRALATERALLY ROTATES the trunk and neck at the spinal jts
    • Dorsal Rami of Spinal Nerves
  3. Semispinalis Capitis
    • TPs of C7-T6 and Articular processes of C4-6
    • Occipital bone between Superior and Inferior Nuchal Lines
    • EXTENDS, LATERALLY FLEXES and CONTRALATERALLY ROTATES the trunk and neck at the spinal jts
    • Dorsal Rami of Spinal Nerves
  4. Multifidus
    • Posterior Sacrum, PSIS, Posterior Sacroiliac Ligament and varying parts of L5-C4 Vertebrae
    • -Lumbar Region:All mamillary processes
    • -Thoracic Reion:All TPs
    • -Cervical Region:Articular processes of C4-7
    • SPs of Vertebrae 2-4 segmental levels superior to the inferior attachment
    • EXTENDS, LATERALLY FLEXES and CONTRALATERALLY ROTATES the trunk and neck at spinal jts
    • ANTERIORLY TILTS the pelvis at the lumbosacral jt
    • Dorsal Rami of Spinal Nerves
  5. Rotatores
    • TP (inferiorly)
    • Lamina (superiorly) of vertebrae 1-2 levels superior
    • EXTENDS and CONTRALATERALLY ROTATES the trunk and neck at spinal jts
    • Dorsal Rami of Spinal Nerves
  6. Interspinales
    • From an SP
    • SP directly superior
    • EXTENDS the trunk and neck at spinal jts
    • Dorsal Rami of Spinal Nerves
  7. Intertransversarii
    • From a TP
    • TP directly superior
    • -Cervical Region:7 pairs (Ant and Post) between C1 and T1
    • -Thoracic Region:3 between T10 and L1
    • -Lumbar Region:4 pairs (Med and Lat) between L1 and L5
    • LATERALLY FLEXES the trunk and neck at spinal jts
    • Dorsal and Ventral Rami of Spinal Nerves
  8. Levator Costarum
    • TPs of C7-T11
    • Ribs #1-12 (inferiorly)
    • ELEVATES ribs at Sternocostal and Costospinal jts
    • Dorsal and Ventral Rami of Spinal Nerves
  9. Subcostales
    • Ribs #10-12 (internal surface near the angle)
    • Ribs #8-10 (internal surface near the angle)
    • DEPRESSES RIBS #8-10 at sternocostal and costospinal jts
    • Intercostal Nerves 8-11

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