<prompt> Structure related to deltopectoral groove isAxillary aeyCephalic veinBasilic veinRadial nerve  <response>: the deltopectoral groove - The cephalic vein, the deltoid branch of the thoraco-acromial aery, and one or two deltopectoral lymph nodes lie in the deltopectoral groove, under the deep fascia on the medial side of the septum. Ref : B D Chaurasias Human Anatomy , seventh edition , volume 1 , pg. no., 43 