The transversospinales are a group of muscles of the human back. Their combined action is rotation and extension of the vertebral column. These muscles are small and have a poor mechanical advantage for contributing to motion. They include: the three semispinalis muscles, the multifidus muscle, and the rotatores muscles.
Transversospinales | |
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![]() Section of the neck at about the level of the sixth cervical vertebra. Showing the arrangement of the fascia coli. | |
![]() Deep muscles of the back. | |
Details | |
Origin | Transverse process |
Insertion | Spinous process |
Nerve | Posterior ramus of spinal nerve |
Actions | Extend vertebral column (bilateral contraction); rotate vertebral column (unilateral contraction) |
Identifiers | |
Latin | musculi transversospinales |
TA98 | A04.3.02.201 |
TA2 | 2275 |
FMA | 71304 |
Anatomical terms of muscle |
Location
editThe three semispinalis muscles, span 4-6 vertebral segments:
- semispinalis thoracis
- semispinalis cervicis
- semispinalis capitis
The multifidus muscle, and spans 2-4 vertebral segments
The rotatores muscles, lie beneath the multifidus, and spans 1-2 vertebral segments
- rotatores cervicis
- rotatores thoracis
- rotatores lumborum
External links
edit- Musculoskeletal Interventions: Techniques for Therapeutic exercise. Authors: Michael L. Voight, Barabara J. Hoogenboom, William E. Prentice.