This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Upper limb- bones and muscles(proximal) and scapular movement, Subject name: Anatomy
The accompanying aery with axillary nerve in the quadrangular space is: 
Select and explain. 
A. Anterior circumflex humeral aery, B. Posterior circumflex humeral aery, C. Profunda brachii aery, D. Circumflex scapular aery
B: Posterior circumflex humeral aery
Answer: B: Posterior circumflex humeral aery 
Explanation: Axillary nerve and posterior circumflex humeral aery pass through quadrangular space and then wind around the surgical neck of humerus.