The spinalis cervicis is the cervical part of the spinalis muscle and the forward continuation of the spinalis thoracis, that attaches to cervical vertebral spinous processes.
Origin: forward extension of the spinalis thoracis (that extends across the spinous processes of one or more thoracic vertebrae, and sometimes last cervical vertebra)
Insertion: spinous processes of Vth to 2nd cervical vertebrae
Action: fixes the thoracic vertebral column and extends the neck
Nerve: Dorsal branches of the cervical and thoracic nerves