[TA] intermediate erector spinae muscle in neck; origin, transverse processes of upper thoracic vertebrae; insertion, transverse processes of middle and upper cervical vertebrae; action, extends cervical vertebrae; nerve supply, dorsal primary rami of lower cervical and upper thoracic spinal nerves. SYN: musculus longissimus cervicis [TA], cervical longissimus muscle, musculus transversalis cervicis, musculus transversalis colli.
