Shoulder muscle anterior

Abdominal part of pectoralis major muscle

Acromion

Clavicular head of pec major

Deltoid muscle

Latissimus dorsi

Long head of biceps brachii

Pectoralis major

Serratus anterior

Short head of biceps brachii

Sternocleidomastoid

Sternocostal head of pectoralis major muscle

Trapezius

Triceps brachii muscle (lateral head)