Superficial anatomy of the axilla

Superficial dissection of the pectoral region of the female. On the left side, observe the breast (skin removed) extending from the 2^nd through the 6^th ribs. Observe also the axillary tail extending into the axilla. The nonlactating breast consists primarily of fat. On the right side, observe the deep pectoral fascia covering the pectoralis major. Observe that the mammary gland lies in the subcutaneous connective tissue, or superficial fascia, between the skin and deep fascia.