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Shoulder Muscles - Scapulohumeral Muscles

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ethan1's version from 2017-08-16 11:22

Section

Question Answer
Deltoid - originlateral 1/3 clavicle, acromion, spine of scapula
Deltoid - insertiondeltoid tuberosity of humerus
Deltoid - nerveaxillary nerve
Deltoid - actionabducts, flex, extend, rotates humerus
memorize

Rotator Cuff Muscles

Question Answer
Supraspinatus - originsupraspinous fossa
Supraspinatus - insertiongreater tubercle humerus
Supraspinatus - nervesuprascapular nerve
Supraspinatus - actionabduction of humerus, stabilize shoulder joint
memorize

Rotator Cuff Muscles

Question Answer
Infraspinatus - origininfraspinous fossa
Infraspinatus - insertiongreater tubercle (middle) of humerus
Infraspinatus - nervesuprascapular nerve
Infraspinatus - actionlaterally rotates humerus, holds humerus in place
memorize

Rotator Cuff Muscles

Question Answer
Teres Minor - originsuperior part of lateral border of scapula
Teres Minor - insertiongreater tubercle (inferior) of humerus
Teres Minor - nerveaxillary nerve
Teres Minor - actionlaterally rotates and adducts humerus
memorize

Rotator Cuff Muscles

Question Answer
Subscapularis - originsubscapular fossa
Subscapularis - insertionlesser tubercle of humerus
Subscapularis - nerveupper and lower subscapular nerves
Subscapularis - actionmedially rotates and adducts humerus, stabilize shoulder joint
memorize

NOT Cuff Muscle

Question Answer
Teres Major - origindorsal surface of inferior angle of scapula
Teres Major - insertionmedial lip of bicipital groove of humerus
Teres Major - nervelower subscapular nerve
Teres Major - actionadducts and medially rotates humerus
memorize