The subscapularis is the only rotator cuff muscle that causes
lesser tubercle.
O depression of the scapula
O lateral rotation of the humerus
retraction of the scapula
O medial rotation of the humerus
due to it having an insertion on the



Answer :

Final answer:

The subscapularis muscle causes medial rotation of the humerus by inserting on the lesser tubercle, working in conjunction with other rotator cuff muscles to support shoulder joint movements.


Explanation:

The subscapularis muscle is responsible for medial rotation of the humerus. It inserts on the lesser tubercle of the humerus. This muscle, along with the other rotator cuff muscles, plays a crucial role in stabilizing and controlling the movements of the shoulder joint.


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