Scalenes:
Middle
Anterior
Posterior
1 st rib
C-2 vertebra
Sternocleidomastoid
Middle scalene Anterior scalene
Brachial nerve plexus and subclavian artery in thoracic outlet
Subclavian vein
Clayicle
Figurę 3-40 Anatomy of the scalenes and the thoracic outlet
2nd rib
Acromion process of scapula