yogabook / muscles / autochthonous back muscles / spinalis cervicis
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M. spinalis cervicis
may be missing
Origin: spinous processes of the second thoracic to sixth cervical vertebrae
Attachment: spinous process of the fourth to second cervical vertebrae
Innervation: Rami posteriores C4 to T1
Antagonists:
Movement: Innervated on both sides: Extension of the spine; innervated on one side: Support of an already assumed ipsilateral lateral flexion or elimination of a contralateral lateral flexion.