The accompanying aery with axillary nerve in the quadrangular space is:
Anterior circumflex humeral aery
Posterior circumflex humeral aery
Profunda brachii aery
Circumflex scapular aery
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