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Medical Term:

semispinalis thoracis (muscle)


origin, transverse processes of fifth to eleventh thoracic vertebrae; insertion, spinous processes of first four thoracic and fifth and seventh cervical vertebrae; action, extends vertebral column; nerve supply, dorsal primary rami of cervical and thoracic spinal nerves.

Synonym(s): musculus semispinalis thoracisTA, musculus semispinalis dorsi, semispinal muscle of thorax

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