Scapulohumeral Muscles Flashcards
origin of anterior deltoid
lateral 1/3 of clavicle
origin of lateral deltoid
acromion
origin of posterior deltoid
scapular spine
insertion of deltoid (anterior, lateral, and posterior)
deltoid tuberosity of humerus
innervation of deltoid (anterior, lateral, and posterior)
axillary nerve
action of anterior deltoid
flexion, internal rotation, and ADduction
action of lateral deltoid
ABduction
action of posterior deltoid
extension, external rotation, and ADduction
origin of teres major
scapula (inferior angle)
insertion of teres major
medial lip of inter tubercular groove of humerus
innervation of teres major
lower subscapular nerve
action of teres major
internal rotation, ADduction, and extension
origin of supraspinatus
supraspinous fossa (scapula)
insertion of supraspinatus
greater tubercle of humerus
innervation of supraspinatus
suprascapular nerve
action of supraspinatus
ABduction
origin of infraspinatus
infraspinous fossa (scapula)
insertion of infraspinatus
greater tubercle of humerus
innervation of infraspinatus
suprascapular nerve
action of infraspinatus
external rotation
origin of teres minor
lateral border of scapula
insertion of teres minor
lesser tubercle of humerus
innervation of teres minor
axillary nerve
action of teres minor
external rotation
origin of subscapularis
subscapular fossa (scapula)
insertion of subscapularis
lesser tubercle of humerus
innervation of subscapularis
upper and lower subscapular nerve
action of subscapularis
internal rotation