scapulohumeral muscles Flashcards
teres major origin
posterior surface of inferior angle of scapula
teres major insertion
intertubercular sulcus of humerus
teres major action
- adduction
- medial rotation of arm
teres major innervation
lower subscapular nerve
deltoid origin
- clavicle
- acromion
- spine of scapula
deltoid insertion
deltoid tuberosity
deltoid action
- anterior: flex and medial rotation of arm
- middle: ABD arm
- posterior: extension and lateral rotation of arm
deltoid innervation
axillary nerve
supraspinatus origin
supraspinous fossa of scapula
supraspinatus insertion
greater tubercle of humerus
supraspinatus action
ABD humerus at glenohumeral joint
supraspinatus innervation
suprascapular nerve
infraspinatus origin
infraspinous fossa of scapula
infraspinatus insertion
greater tubercle of humerus
infraspinatus action
lateral rotation of arm
infraspinatus innervation
suprascapular nerve
teres minor origin
lateral scapula
teres minor insertion
greater tubercle of humerus
teres minor action
lateral rotation of arm
teres minor innervation
axillary nerve
subscapularis origin
subscapular fossa
subscapularis insertion
lesser tubercle of humerus
subscapularis action
medial rotation of arm
subscapularis innervation
upper and lower subscapular nerve
