13.1 Muscles that move the pectoral girdle and glenohumeral joint
action of supraspinatus (RC)
humerus
insertion of teres minor (RC)
humerus
insertion of biceps brachii (short head)
radial
origin of pectoralis minor
upper ribs
origin of pectoralis major
sternum
origin of deltoid (anterior fibers)
clavicle (lateral third)
action of pectoralis minor
depresses the scapula
action of rhomboid minor
elevate scapula
action of levator scapulae
elevates the scapula
action of teres major
extends rotates arm
action of triceps brachii (long head)
extends, adducts arm
action of latissimus dorsi
extends, adducts, medially rotates arm
action of pectoralis major
flexes arm
action of biceps brachii (long head)
flexes arm (weak)
action of biceps brachii (short head)
flexes arm (weak)
action of deltoid (anterior fibers)
flexes rotates arm
insertion of deltoid (anterior fibers)
humerus
insertion of infraspinatus (RC)
humerus
insertion of pectoralis major
humerus
insertion of subscapularis (RC)
humerus
insertion of supraspinatus (RC)
humerus
insertion of teres major
humerus
insertion of latissimus dorsi
humerus (intertubercular groove)
origin of latissimus dorsi
iliac crest
biceps brachii
infraglenoid tubercle of scapula
brachialis
orgin: humerus insertion: ulna. action: flexes
action of serratus anterior
protract scapula
insertion of biceps brachii
radial
origin of serratus anterior
ribs 1-8 (outer surface), upper ribs
action of infraspinatus (RC)
rotates arm
action of subscapularis (RC)
rotates arm
action of teres minor (RC)
rotates arm
insertion of levator scapulae
scapula
insertion of pectoralis minor
scapula
insertion of rhomboid major
scapula
insertion of rhomboid minor
scapula
insertion of serratus anterior
scapula
insertion of triceps brachii (long head)
scapula
origin of biceps brachii
scapula
origin of biceps brachii (short head)
scapula
origin of infraspinatus (RC)
scapula
origin of subscapularis (RC)
scapula
origin of supraspinatus (RC)
scapula
origin of teres major
scapula
origin of teres minor (RC)
scapula
origin of triceps brachii (long head)
scapula
origin of rhomboid major
spines
origin of rhomboid minor
spines
action of rhomboid major
stabilizes the scapula
origin of levator scapulae
transverse processes