Attachment - To the bodies of the first six dorsal vertebrae. This portion proceeds forward, to be inserted by a strong tendon into the sixth cervical vertebra. That portion situated in front of the neck has its origin in the transverse processes of the last six cervical vertebrae, and in the bodies of the first six. Its terminal tendon gains attachment to the tubercle on the under surface of the atlas.
Action. - To bend the neck as a whole, or any part of it.