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semispinalis


'semispinalis' can also refer to...

 

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A group muscles on either side of the vertebral column and forming part of the deep layer of back muscles which extends from the thoracic region to the head. The group comprises the semispinalis capitis (origin on thoracic and cervical vertebrae; insertion on the occipital bone); the semispinalis cervicis (origin on transverse processes of thoracic vertebrae 1–6; insertion on the spinous processes of vertebrae from the second cervical to fifth thoracic); and the semispinalis thoracis (origin on transverse processes of thoracic vertebrae 6–12; insertion on the spinous processes of thoracic and cervical vertebrae). The primary actions of the semispinalis are extension, lateral flexion, and rotation (to the opposite side) of the spine.

Subjects: Sports and Exercise Medicine.


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