Anatomy

Origin

Rotatores - Cervical Part: Articular processes of each vertebra Rotatores - Thoracic Part: Transverse process of each vertebra Rotatores - Lumbar Part: Mamillary processes of each vertebra

Insertion

Base of spinous process and vertebral laminae of next vertebra above The fibers spanning one segment may be referred to as short rotatores or rotatores brevis.  The fibers spanning 2 segments may be referred to as long rotatores or rotatores longus

Nerve

Dorsal primary division of spinal nerves

Actions

Extend and rotate vertebral column