<prompt> How many lactiferous ducts open into nipple0-1015-2025-5050-75  <response>: The gland consists of 15 to 20 lobes.Each lobe is a cluster of alveoli,and is drained by a lactiferous duct.The lactiferous ducts converge towards the nipple and open on it.Near its termination each duct has a dilatation called a lactiferous sinus. Ref.B D Chaurasias human anatomy.vol.1 