Muscles inserting on the humerus Flashcards
pectoralis major origin
medial 2/3 clavicle, sternum
pectoralis major insertion
greater tubercle
pectoralis major action
flexion, adduction, internal rotation
pectoralis major nerve
medial and lateral pectoral nerves
latissimus dorsi origin
spinous processes T6-T12
latissimus dorsi insertion
floor of bicipital groove
latissimus dorsi action
extension, adduction, internal rotation
latissimus dorsi nerve
thoracodorsal
deltoid origin
spine of scapula, acromion process, lateral 1/3 of clavicle
deltoid insertion
deltoid tuberosity
deltoid action
flexion, internal rotation (anterior); abduction (middle); extension and external rotation (posterior)
deltoid nerve
axillary
subscapularis origin
subscapular fossa
subscapularis insertion
lesser tubercle
subscapularis action
internal rotation
subscapularis nerve
upper and lower subscapular
supraspinatus origin
supraspinous fossa
supraspinatus insertion
greater tubercle
supraspinatus action
abduction
supraspinatus nerve
suprascapular
infraspinatus origin
infraspinous fossa
infraspinatus insertion
greater tubercle
infraspinatus action
external rotation
infraspinatus nerve
suprascapular
teres minor origin
lateral border of scapula
teres minor insertion
greater tubercle
teres minor action
external rotation
teres minor nerve
axillary
teres major origin
inferior angle and posterior scapula
teres major insertion
lesser tubercle
teres major action
internal rotation
teres major nerve
lower subscapular
