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Rotatores thoracis

Other Terms: Rotatores thoracis, Musculi rotatores thoracis, Muscle rotateurs du thorax

Muscle parts

None

Latin name

Musculi rotatores thoracis

Latin muscle parts

None

Group

Epaxial muscle – Transversospinales – Rotatores

Etymology

The English name of this muscle is the muscle that turns (the vertebra) around in the thoracic region. Rotatores comes from the Latin verb rotatore meaning “to rotate,” which in turn comes from the Latin rota meaning “wheel.” The word thoracis comes from the Greek thorakos meaning “breast plate or chest.”

Origin

Posterior surface of the superior margin of the transverse process of the thoracic vertebrae

Insertion

Inferior margin of the lateral aspect of the laminae of the thoracic vertebrae

Action

Possibly weakly assist with extension of the thoracic vertebrae. They are most likely proprioceptive transducers that monitor the position and movements of the vertebral column and provide feedback that influences the activity of the larger multisegmental muscles of the vertebral column.

Nerve supply

Dorsal rami of thoracic spinal nerves (T1 to T11)

Blood supply

Dorsal branches of the posterior intercostal arteries from the thoracic aorta.

Latin

Musculi rotatores thoracis

French

Muscle rotateurs du thorax

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