<prompt> Aery forming anastomosis around surgical neck humerus1st pa of axillary aery2nd pa of axillary aery3rd pa of axillary aerySubclan aery  <response>: Anterior Circumflex humeral aery and posterior Circumflex humeral aery are branches from 3rd pa of axillary aery . These two anastomose around the surgical neck of humerus . Posterior Circumflex humeral aery runs along with axillary nerve and passes through the quadrangular intermuscular space . B D Chaurasia 7th edition Page no : 53 