muscles of shoulder joint Flashcards
origin and insertion of teres major
O: lower 1/3 of lat border of scapula
I: inf 1/2 of medial lip of intertubercular groove
flexion
horizontal flexion
medial rotation
actions of pec major clavicular portion and deltoid anterior
extension
horizontal flexsion
medial rotation
adduction
actions of pec major sternal portions
actions of deltoid posterior fibers
extension
horixontal extension
lateral rotation
actions of infraspinatus
lat rotation
stabilization prevents up/ant motion of shoulder
origin and insertion of coracobrachialis
O: coracoid process
I: mid med shaft of humerus
actions of latissimus dorsi
extension
horizontal extenstion
adduction
medial rotation
actions of deltoid middle fibers
abduction
Actions of subscapularis
med rotation
stabilization prevents post motion of shoulder
abduction
actions of deltoid middle fibers
actions of pec major clavicular portion
flexion
horizontal flexion
medial rotation
origin and insertion of deltoid posterior fibers
O: scapular spine
I: deltoid tuberosity
actions of coracobrachialis
felxion
horizontalflexion
adduction
lat roation
stabilization prevents up/ant motion of shoulder
action of teres minor and infraspinatus
med rotation
stabilization prevents post motion of shoulder
Actions of subscapularis