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multifidus (muscle)

 

Definition: intermediate layer of deepest (transversospinales) muscles of back; origin, from the sacrum, sacroiliac ligament, mammillary processes of the lumbar vertebrae (multifidus lumborum [TA], SYN musculus multifidus lumborum [TA]), transverse processes of thoracic vertebrae (multifidus thoracis [TA], SYN musculus multifidus thoracis [TA], and articular processes of last four cervical vertebrae (multifidus cervicis [TA], SYN musculus multifidus cervicis/colli [TA]); insertion, into the spinous processes of all the vertebrae up to and including the axis; action, rotates vertebral column; nerve supply, posterior rami of spinal nerves.

Synonym(s): musculus multifidus (cervicis/colli, lumborum et thoracis)TA, musculus multifidus spinae

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© Copyright 2017 Wolters Kluwer. All Rights Reserved. Review Date: Sep 19, 2016.
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