longissimus cervicis (muscle)

lon·gis·si·mus cer·vi·cis (mus·cle)

[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.