<prompt> Lymph nodes draining the breast and lying behind the pectoralis minor are labelled as:Level 1Level 2Level 3None of the above  <response>: Axillary nodes receive more than 75 of the lymph from the breast. There are 20-40 nodes, grouped aificially as pectoral anterior, subscapular posterior, central and apical. Surgically, the nodes are described in relation to pectoralis minor. Those lying below pectoralis minor are the low nodes level 1, those behind the muscle are the middle group level 2, while the nodes between the upper border of pectoralis minor and the lower border of the clavicle are the upper or apical nodes level 3. Ref: Grays anatomy 40th edition, Chapter 58. 