Fourth thoracicintercostal nerveMammary glandsLactiferousductsLactiferoussinusesPectoralis majorDeep (pectoral) fasciaAxillary processAxillarylymph nodesSecond, third, and fourth anteriorperforating branches of internalthoracic arteryInternalthoracic arteryParasternallymph nodesLymphatic vessel
Fig. 3.10 Vertebral level TIV/V.