Scalenus Anterior Origin: From the transverse processes of the 3rd; 4th ; 5th and 6th cervical vertebrae. Insertion: Into the scalene tubercle on the inner. - ppt video online download
The Scalene Muscles | Blood Supply, Innervation | Geeky Medics
Scalenes Anatomy: Origins, Insertions, Actions, Innervations - The Wellness Digest