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Thoracic intertransversarii

Other Terms: Intertransversarii thoracis, Thoracic intertransversarii, Thoracic intertransversarii set, Musculi intertransversarii thoracis, Muscle intertransversaires du thorax

Muscle parts

None

Latin name

Musculi intertransversarii thoracis

Latin muscle parts

None

Group

Epaxial muscle – Intertransversarii

Etymology

In English, this muscle’s name is the muscle between the crosswise processes of the chest vertebrae. The word intertransversarii comes from the Latin inter meaning “between” and the Latin term transversus for “crosswise,” which comes from Latin trans meaning “across, beyond, or through” and the Latin verb vertere meaning “to turn.” It is used in reference to the transverse processes of the vertebrae. The word thoracis comes from the Greek thorakos meaning “breast plate or chest.”

Origin

Transverse processes of thoracic vertebrae eleven and twelve and the mamillary process of the first lumbar vertebra

Insertion

Transverse processes of thoracic vertebrae ten through twelve

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 (T9 to T12)

Blood supply

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

Latin

Musculi intertransversarii thoracis

French

Muscle intertransversaires du thorax

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