Structure. The scalene muscles originate from the transverse processes from the cervical vertebrae of C2 to C7 and insert onto the first and second ribs.
Do the Scalenes attach to the clavicle?
The scalene triangle is bound by the anterior and middle scalene muscles, with the first rib at the base. … Beyond the first rib and clavicle, the brachial plexus nerves, subclavian artery and subclavian vein all pass underneath the pectoralis minor muscle, in front of the shoulder.
Where do you find scalene muscles?
- Anterior Scalene: the front-most scalene muscle, lies between the SCM (sternocleidomastoid) and the neck vertebrae and is almost completely hidden.
- Middle Scalene: is behind the anterior scalene, more on the side of the neck, with its lower half free of the SCM.
