Please select one of the following:

The supraspinatus attaches to the greater tuberosity and abducts the shoulder
The deltoid muscle innervated by the axillary nerve abducts the shoulder
The subscapularis attaches to the lesser tuberosity and internally rotates the shoulder
The infraspinatus and teres minor attach to the greater tuberosity and externally rotates the shoulder
Impingement of the rotator cuff muscles between the humeral head and the acromion leads to a painful arc