Back muscles

Rhomboid minor

back bone close to the spine (top)

Rhomboid major

back bone close to the spine (bottom)

Trapezius

large bone located at the back of the shoulder, back and neck

Serratus anterior 

muscle on the side of your chest that originates from the ribs and attaches to the scapula

Levator scapulae

a muscle in the neck that elevates the scapula

Pectoralis major

large muscle in the upper chest, forming the front of the armpit

Pectoralis minor

small, triangular muscle located beneath the larger pectoralis major muscle in the chest

Latissimus dorsi

large, flat muscle on the lower back

Sternoclidomastoid

long muscle located inside the neck that allows head movement