Superficial Muscles of the Anterior and Posterior Thorax: Movements of the Scapula and Arm

pectoralis minor, action

fixes rib, protracts and depresses scapula

pectoralis minor, origin

ribs 3 - 5

pectoralis minor, insertion

coracoid process

serratus anterior, action 

rotates scapula

serratus anterior, origin

ribs 1 - 8

serratus anterior, insertion

vertebral border of scapula

subclavius, action

fixes pectoral girdle

subclavius - origin

costal cartilage of rib 1

subclavius, insertion

clavicle

trapezius, action

fixes, elevates, retracts, and rotates scapula

trapezius - origin

occipital condyle, vertebral column

trapezius - insertion 

acromion, spine of scapula lateral third of clavicle 

levator scapulae, action

elevates, adducts scapula

levator scapulae, origin 

vertebral transverse processes

levator scapulae, insertion

medial border of scapula

rhomboids, action

fixes scapula

rhomboids, origin

vertebral spinous process

rhomboids, insertion 

medial border of scapula