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UNIT 6 BREAST DISORDERDS. INTRODUCTION There are 15-20 lobes in the breast Lobes are made by small lobules. Small ducts join the lactiferous duct. -The lactiferous duct acts as a reservoir of milk after delivery and the dark brown areola is part of the breast. Areola blood, Venus, nine supplies lift supply. Blood supply:- Branches of the thoracic artery and axillary artery provide blood supply to the breast. Venous drainage