Muscles that move the shoulder/arm

Question 1

Pectoralis major

Answer 1

A: Flexes, adducts, and medially rotates shoulder
O: clavicle, sternum, ribs
I: intertubercular sulcus of humerus

Question 2

Latissimus dorsi

Answer 2

A: adducts, extends, and medially rotates the shoulder
I: intertubercular sulcus of humerus

Question 3

Deltoid

Answer 3

A: abduct shoulder
O: clavicle and spine of scapula
I: deltoid tuberosity of humerus

Question 4

Supraspinatus*

*rotator cuff group

Answer 4

A: abduction of the shoulder
O: supraspinous fossa
I: greater tubercle of humerus

Question 5

Infraspinatus*

*rotator cuff group

Answer 5

A: Laterally rotates the shoulder
O: infraspinous fossa
I: greater tubercle of humerus

Question 6

Teres minor*

*rotator cuff group

Answer 6

A: Laterally rotates the shoulder
O: scapula
I: greater tubercle of humerus

Question 7

Subscapularis*

*rotator cuff group

Answer 7

A: medially rotates and adducts the shoulder
O: subscapular fossa
I: lesser tubercle of humerus