yogabook / muscles / autochthonous back muscles / longissimus thoracis
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M. longissimus thoracis
Origin: spinous processes
Attachment: processi accessori and transversi as well as tuberositas musculi longissimi of rib edges; in the upper area of the ribs also at tuberculi costae
Antagonists:
Movement: Innervated on both sides: Extension of the spine or reclination of the head; innervated on one side: ipsilateral lateral flexion of the spine or elimination of contralateral lateral flexion.