Muscles That Move the Pectoral Girdle

1

Trapezius (superior fibers): elevate scapula, extend head, superiorly rotate scapula

trapezius (middle fibers)

adduct/retract scapula (pull it toward spine)

trapezius (inferior fibers)

depress scapula (pull it down)

2

Supraspinatus: abduct arm

3

Deltoid (posterior fibers): extend arm (move backward), laterally rotate arm (rotate outward)

4

Rhomboid major: elevate scapula, adduct/retract scapula, inferiorly rotate scapula

5

Infraspinatus: adduct arm, laterally rotate arm

6

Latissimus dorsi: extend arm, adduct arm, medially rotate arm

1

Trapezius:

superior: elevate scapula, extend head, superior rotate scapula

middle: adduct/retract scapula

inferior: depress scapula

2

Rhomboid minor: elevate scapula, adduct/retract scapula, inferiorly rotate scapula

3

Rhomboid major: elevate scapula, adduct/retract scapula, inferiorly rotate scapula

4

Serratus anterior: abduct/protract scapula (pull forward), rotate scapula

5

Latissimus dorsi: extend arm, adduct arm, medially rotate arm

6

Erector spinae: extend spine, maintain posture, lateral flexion and rotation of spine

1

Pectoralis minor: depress scapula, abduct/protract scapula, inferiorly rotate scapula

2

Serratus anterior: abduct/protract scapula (pull forward), rotate scapula

?

Levator scapulae: elevate scapula, inferiorly rotate scapula