A225Lec - Bones & Muscles of the Pectoral Girldle and Arm - 9/20

clavicle and scapula

bones of the pectoral girdle

trapezius

elevates and retracts scapula

rhomboids (major, minor)

elevates and retracts scapula

levator scapulae

elevates scapula

pectoralis minor

protracts and depresses scapula

serratus anterior

protracts and depresses scapula

pectoralis major

flexes and adducts arm (humerus) at the glenohumeral joint

latissimus dorsi

extends and adducts arm

which bone do the pectoralis major and latissimus dorsi articulate with?

humerus

deltoid

abducts, flexes, and extends arm

coracobrachialis

flexes and adducts arm

teres major

extends and adducts arm

subscapularis

medially rotates arm

supraspinatus

abducts arm

infraspinatus

laterally rotates arm

teres minor

laterally rotates arm

biceps brachii

flexes and supinates forearm, stabilizes shoulder

brachialis

flexes forearm

brachioradialis

flexes forearm

triceps brachii

extends forearm

anconeus

extends forearm

primary muscle(s) used for scapula elevation

higher trapezius and levator scapulae

primary muscle(s) used for scapula depression

lower trapezius

primary muscle(s) used for scapula retraction (adduction)

rhomboids, middle trapezius

primary muscle(s) used for scapula protraction (abduction)

serratus anterior, pectoralis major

primary muscle(s) used for upward rotation of scapula

upper and middle trapezius

primary muscle(s) used for downward rotation of scapula

rhomboids