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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
