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Deep Back: Transversospinalis Group

  1. Semispinalis capitus PA (Origin)
    TP's C7-T6 & articular processes of C4-6
  2. Semispinalis capitues DA (Insertion)
    med area between sup & inferior nuchal lines
  3. Semispinalis capitus Inneration
    Dorsal rami of cervical and thoracic spinal nerves
  4. Semispinalis capitus Blood Supply
    Deep Cervical a. (Branch off the costocervical trunk), Posterior branches of posterior intercostal artieries
  5. Semispinalis capitus Actions
    Unilaterally: minimal contralateral rotation of the head

    Bilaterally: Extends the head
  6. Semispinalis cervicis PA (Origin)
    TP's of T1-5
  7. Semispinalis cervicis DA (Insertion)
    SP's of C2-5
  8. Semispinalis cervicis Innervation
    Dorsal rami of cervical and thoracic spinal nerves
  9. Semispinalis cervicis Blood Supply
    Deep cervical a. (branch off the costocervical trunk), Posterior branches of posterior intercostal arteries
  10. Semispinalis cervicis Actions
    Unilaterally: Contralateral rotation of the neck

    Bilaterally: Extends the spine
  11. Semispinalis thoracis PA (Origin)
    TP's of T6-10
  12. Semispinalis thoracis DA (Insertion)
    SP's of C6-T4
  13. Semispinalis thoracis Innervation
    Dorsal rami of cervical and thoracic spinal nerves
  14. Semispinalis thoracis Blood Supply
    Posterior branches of poesterior intercostal arteries
  15. Semispinalis thoracis Actions
    Unilaterally: Contralateral rotation of the spine

    Bilaterally: Extends the spine
  16. Multifidus PA (Origin)
    Dorsal surface of the sacrum, aponeurosis of the erector spinae, PSIS, the dorsal SI ligs., all lumbar mamillary processes, all thoracic TP's & the articular processes of C4-7
  17. Multifidus DA (Insertion)
    SP of a more superior located vertebrae
  18. Multifidus Innervation
    Dorsal rami of corresponding spinal nerves
  19. Multifidus Blood Supply
    Posterior branches of posterior lumbar arteries
  20. Multifidus Actions
    Unilaterally: Contralateral rotation of the spine

    Bilaterally: Extends the spine
  21. Short Rotatores PA (Origin)
    Upper posterior portion of the TP's in each region (most highly developed in the thoracic region)
  22. Short Rotatores DA (Insertion)
    lower border & lateral surface of the lamina of the vertebrae immediately superior to it
  23. Short Rotatores Innervation
    Dorsal rami of spinal nerves
  24. Short Rotatores Blood Supply
    Posterior branches of posterior intercostal arteries
  25. Short Rotatores Actions
    Unilaterally: contralateral rotation of the spine

    Bilaterally: Extends the spine
  26. Long Rotatores PA (Origin)
    Upper posterior portion of the TP's in each region (most highly developed in the thoracic region)
  27. Long Rotatores DA (Insertion)
    lower border & lateral surface of the lamina of the vertebrae 2 vertebral levels superior to it
  28. Long Rotatores Innervation
    Dorsal rami of spinal nerves
  29. Long Rotatores Blood Supply
    Posterior branches of posterior intercostal arteries
  30. Long Rotatores Actions
    Unilaterally: Contralateral rotation of the spine

    Bilaterally: Extends the spine
Author
paffman7
ID
34799
Card Set
Deep Back: Transversospinalis Group
Description
Muscle Chart Deep Back
Updated

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