Final answer:
The teres major and latissimus dorsi extend the arm, assist in adduction, and medially rotate the arm.
Step-by-step explanation:
The teres major and latissimus dorsi are muscles that contribute to the movements of the shoulder. These muscles have three main actions: they extend the arm, assist in adduction, and aid in medial rotation of the arm. The teres major is located inferior to the teres minor and works closely with the latissimus dorsi to facilitate these movements.
The teres major and latissimus dorsi have the same three actions; they extend the arm, assist in adduction of the arm, and medially rotate the arm.