spinalis cervicis muscle

spi·na·lis cer·vi·cis mus·cle

(spī-nā'lis ser-vī'sis mŭs'ĕl) An inconstant or rudimentary muscle; origin, spinous processes of sixth and seventh cervical vertebrae; insertion, spinous processes of axis and third cervical vertebra; action, extends cervical spine; nerve supply, dorsal primary rami of cervical.
Synonym(s): musculus spinalis cervicis [TA] , spinal muscle of neck.