Sternocleidomastoid
sternal head clavicular head
/
Trapezius
Clavicle
Acromion process of scapula
C-2 vertebra
Brachial nerve plexus and subclavian artery in thoracic outlet
Scalenes:
Middle
Anterior
Posterior
1 st rib
2nd rib
Platę 3-5 The scalene muscles and lateral neck anatomy