AOI of slides 22-32
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43 Terms
what muscle is this
deltoid
what is the action of the middle delt
abduct the shoulder
what do all the fibers of the deltoid do
abduct the shoulder
what do the anterior fibers of the deltoid do
flex, internal rotation , horizontally adduct, abduct shoulder
what actions do the posterior deltoid muscles do
abduct, extend, externally rotate, horizontally abduct the shoulder
what is the origin of the deltoid
lateral one third of clavicle, acromion and spine of scapula
what is the insertion of the deltoid
deltoid tuberosity
what muscle is this
supraspinatus
what are the actions of the supraspinatus
abduct the shoulder
what is the origin of the supraspinatus
supraspinous fossa of the scapula
what is the insertion of the supraspinatus
greater tubercle of humerus
what muscle is this
infraspinatus
what are the actions of the infraspinatus
externally rotate the the shoulder
what is the origin of the infraspinatus
infraspinous fossa
what is the insertion of the infraspinatus
greater tubercle of the humerus
what muscle is this
teres minor
what are the actions of the teres minor
externally rotate, adduct the shoulder
what is the origin of the teres minor
upper 2/3 of lateral border of the scapula
what is the insertion of the teres minor
greater tubercle of the humerus
what muscle is this
subscapularis
what are the actions of the subscapularis
internally rotate the shoulder
what are the origins of the subscapularis
subscapular fossa
what is the insertion of the subscapularis
lesser tubercle of humerus
what are the rotator cuff muscles
subscapularis, teres minor, infraspinatus, supraspinatus
what muscle is this
pectoralis major
what are the actions of all pectoralis major muscles
adduct and internally rotate the shoulder
what are the actions of just the upper fibers of the pectoralis major
flexion, horizontally adduct, internal rotation, adduct
what are the actions of just the lower fibers of the pectoralis major
extension, adduct, internally rotae
what is the origin of the pectoralis major
medial half of clavicle, sternum, and cartilage of first through sixth ribs
what is the insertion of the pectoralis major
crest of greater tubercle of the humerus
what muscle is this
pectoralis minor
what are the actions of the pectoralis minor
depression, protraction, downwardly rotate scapula
what is the origin of the pectoralis minor
third, fourth, and fifth ribs
what is the insertion of the pectoralis minor
medial surface of coracoid process
what muscle is this
coracobrachialis
what are the actions of the coracobrachialis
horizontal adduction, flexion, adduction of shoulder
what is the origin of the coracobrachialis
coracoid process of scapula
what is the insertion of the coracobrachialis
medial surface of mid humeral shaft
what muscle is this
biceps brachii
what are the actions of the biceps brachii
supination of forearm and flexion of shoulder
what muscle is this
triceps brachii
what are the actions of the triceps brachii long head
extension and adduction of shoulder
what are the actions of all triceps brachii
extension of elbow