chest muscles

blue

pectoralis major

-flexes arm (humerus)

purple

pectoralis minor

-protracts scapula

pink

serratus anterior

-protracts scapula

green

deltoid

abduction of arm (humerus)

teal

external intercostals

-elevates rib cage

yellow

internal intercostals

depresses rib cage

blue

rectus abdominis

-flexes and rotates vertebral column

green

external obliques

-flexes and rotates vertebral column

pink

internal obliques

-flexes and rotates vertebral column

blue

trapezius

-extends head, retracts scapula, elevates clavicle

yellow

latissimus dorsi

-extends and adducts arm

pink

infraspinatus

-lateral rotation of arm

purple

supraspinatus

-abduction of arm

purple

teres minor (rotator cuff)

-lateral rotation of arm

pink

teres major

-medial rotation of arm (humerus); extends arm

green

rhomboid minor

-retracts scapula

yellow

rhomboid major

-retracts scapula

teal

deltoid

-abduction of arm