rotator muscle

Deepest of the 3 layers of transverse spinal muscles chiefly developed in the thoracic region. Origin: transverse processes of vertebrae Insertion: -> root of the spinous process of the next 2-3 vertebrae above Action: probably serve as organs for proprioception Innervation: dorsal rami of spinal nerves

Specific

rotatores cervicis rotatores lumborum rotatores thoracis

References

Stedman's Medical Dictionary 26th ed, Williams & Wilkins, Baltimore, 1995