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From course:

Muscles

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Question:

Spinalis

Author: Haley Tanne



Answer:

Origin:Origin:Iliac crest, posterior sacrum, inferior lumbar, and sacral spinous processes Insertion: Spinous processes of cervical and thoracic Action: Extend vertebral column (bilaterally), Laterally flex vertebral column (unilaterally) Innervation: Cervical and thoracic dorsal Rami


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Origin:Origin:Iliac crest, posterior sacrum, inferior lumbar, and sacral spinous processes
Insertion: Spinous processes of cervical and thoracic 
Action: Extend vertebral column (bilaterally), Laterally flex vertebral column (unilaterally)
Innervation: Cervical and thoracic dorsal Rami
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