Neck/Shoulder Muscles and Posterior Cervical Triangle Identification

Sternocleidomastoid

Anterior scalene

middle scalene

posterior scalene

lesser occipital nerve (C2)

greater auricular nerve (C2, C3)

transverse cervical nerve (C2, C3)

supraclavicular nerve (C3, C4) (D)

pectoralis major

pectoralis minor

cephalic vein

separates the pectoralis major and deltoid muscles

serratus anterior

subscapularis

deltoid

supraspinatus

infraspinatus

teres minor

teres major

anterior border of axilla region

pec major and minor

posterior border of axilla region

subscapularis, teres major, lats

medial border of axilla region

serratus anterior

lateral border of axillar region

intertubecular groove of humerus

apex of axilla region

clavicle

base of axilla region

armpit

anterior border of posterior cervical triangle

Scleidomastoid muscle

posterior border of posterior cervical triangle

upper trapezius

base of posterior cervical triangle

medial clavicle

floor of posterior cervical triangle

three scalenes, levator scapulae, splenius capitus