Shoulder Flashcards
Posterior deltoid
O: spine of scapula
I: deltoid tuberosity
A: external rotation, extension
Pectoralis Major
O: medial half of clavical, sternum, upper costal cartilages(1-6) and aponeurosis of external oblique
I: lateral lip of bicipital groove of humerus, crest of greater tubercle of humerus
A: flexion, extension, adduction and medial rotation of arm
N: lateral and medial pectoral nerve
Biceps Bracii
O: long head - supraglenoid tubercle of scapula
Short head - coracoid process of scapula
I: radial tuberosity, bicipital aponeurosis(medial forearm)
A: flex arm, shoulder and supinate forearm
N: musculocutaneous
Coracoid Brachialis
O: coracoid process of scapula
I: mid medial surface of humerus
A: flexion and adduction of humerus
N: Musculocutaneous
Subscapularis
O: subscapular fossa of scapula
I: lesser tubercle of humerus
A: medial rotation
N: upper and lower subscapular nerves
Teres Major
O: lateral border and inferior angle of scapula
I: medial lip of bicipital groove
A: adduction, medial rotation, extension
N: lower subscapular
Supraspinatus
O: supraspinous fossa of scapula
I: superior aspect of greater tubercle of humerus
A: abduction, compression of GH
N: suprascapular
Infraspinatus
O: infraspinatus fossa
I: middle of greater tubercle of humerus
A: external rotation, GH compression
N: suprascapular
Deltoid
O: anterior surface of the lateral clavicle O: acromion process and spine of scapula I: Deltoid tuberosity of humerus A: Flex arm, Abduct arm, Medial rotate N: axillary nerve
Teres Minor
O: Middle of lateral border of scapula
I: inferior aspect of greater tubercle of humerus
A: external rotation, weak adductor
N: axillary
Triceps brachii
O: infraglenoid tubercle of scapula
I: posterior olecrannon process of ulna
A: extension of arm and forearm
N: radial
Latissimus Doris
O: spinous process of T7-L5, iliac crest, thoracolumbar fascia, inferior angle of scapula, lower 3 ribs
I: floor of bicipital groove
A: adduction, extension, medial rotation
N: thoracodorsal
