Latissimus dorsi
Teres minor (thinner, superior) and Teres major (thicker, inferior)
Pectoralis major (primary muscles you think of when you hear "chest" are your pecs)
Rectus Abdominis
Subscapularis
Trapezius
Rhomboid minor (thinner, superior) and Rhomboid major (thicker, inferior)
Pectoralis Minor (smaller than major)
Internal abdominal oblique (comparatively medial) and External abdominal oblique (comparatively lateral)
Errector spinae
Deltoid
Infraspinatus (inferior to Supraspinatus)
Serratus anterior (think of a serrated knife, anterior on front side of body)
Transverse abdominis
Iliacus
This muscle is the largest muscle in the upper body
Latissimus Dorsi
Erector spinae
Consists of clavicular and sternal portions.
Pectoralis major
External intercostals
Psoas major (larger) and Psoas minor (smaller)
This muscle moves the scapula and supports the arm.
Trapezius
Supraspinatus (superior to Infraspinatus)
Triangular muscle beneath the Pectoralis major
Pectoralis minor
Internal intercostals
Serratus posterior inferior