The teres minor originates from which part of the scapula?

• A. Upper two thirds of the lateral border
• B. Inferior angle
• C. Medial border
• D. Posterior spine

Answer: (A)

Teres minor is one of the rotator cuff muscles that stabilizes the shoulder and helps externally rotate the arm. Its origin sits along the upper two-thirds of the lateral border of the scapula, which places it on the posterior-lateral edge of the bone. From there, it fibers toward the greater tubercle of the humerus to perform its action.

The inferior angle is the origin for teres major, not teres minor, so that spot is not correct. The medial border is where other muscles attach (such as serratus anterior and rhomboids), not where teres minor begins. The posterior spine is a landmark associated with other muscles (like the region near the infraspinatus) but not the origin of teres minor.