Thoracic intertransversarii - Musculi intertransversarii thoracis

Anatomical hierarchy

General terms > Myology > Muscles of back > Intertransversarii muscles > Thoracic intertransversarii



The intertransversarii musculi are small muscles that pass between transverse processes, between articular and transverse processes or between mamillary and transverse processes.

They are separable into different groups:

  • Intertransversarii lumborum:
    • medial bundles run ventrocranially from mamillary processes to transverse (or accessory) processes
    • Lateral bundles run between transverse processes
  • Intertransversarii thoracis: continuation of the medial lumbar group in the thoracic region
  • Intertransversarii cervicis
    • Intertransversarii dorsales cervicis: bundles that run horizontally between cranial articular processes
    • Intertransversarii medii cervicis: bundles that run cranioventrally from a cranial articular process to the caudal end of the transverse process skipping one vertebra in a cranial direction (C5 to C3 for example)
    • Intertransversarii ventrales cervicis: bundles that run horizontally between caudal ends of two consecutive transverse processes


Origin: transverse processes, mamillary processes

Insertion: transverse processes, articular processes

Action: fixation and lateral flexion of the cervical and lumbar vertebral column

Nerve: Dorsal branches of the cervical, thoracic and lumbar nerves.

Text by Antoine Micheau, MD - Copyright IMAIOS
Illustrated Veterinary Anatomical Nomenclature - 3rd edittion - Gheorghe M. Constantinescu, Oskar Schaller - Enke
Veterinary Anatomy of Domestic Mammals: Textbook and Colour Atlas, Sixth Edition - Horst Erich König, Hans-Georg Liebich - Schattauer - ISBN-13: 978-3794528332


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