Upper Limbs Flashcards
1
Q
infraspinatus origin, insertion + action
A
o: medial 2/3rd of infraspinatus fossa
i: a middle facet of glenoid tubercle
a: external rotation
2
Q
supraspinatus origin, insertion + action
A
o: supraspinous fossa of scapula
i: humerus - the greater tubercle
a: abduction - stabilizes the humeral head within the glenoid cavity
3
Q
subscapularis origin, insertion + action
A
o: subscapular fossa of scapula
i: lesser tubercle of humerus
a: internal arm rotation + stabilizes humeral head in glenoid cavity
4
Q
teres major
A
o: inferior angle + lower part of the lateral border of the scapula
i: intertubercular sulcus of the humerus
a: extension + internal rotation of the arm
