The accompanying aery with axillary nerve in the quadrangular space is:
Axillary nerve and posterior circumflex humeral aery pass through quadrangular space and then wind around the surgical neck of humerus.
Upper limb- bones and muscles(proximal) and scapular movement
Anterior circumflex humeral aery
Posterior circumflex humeral aery
Profunda brachii aery
Circumflex scapular aery
Posterior circumflex humeral aery