Structure passes through upper triangular space:: (A) Profunda brachii, (B) Anterior circumflex humeral aery, (C) Posterior circumflex humeral aery, (D) Circumflex scapular aery
Answer is D. Upper Quadrangular spaceIt has the following boundaries:- the teres major inferiorly- the long head of the triceps laterallyFor the superior border, some sources list the teres minor, while others list the subscapularis.It contains the scapular circumflex vessels.