Final Answer:
The ducts conveying the milk secreted by the lobes of the breast to and through the nipples are called lactiferous ducts. These ducts are responsible for transporting milk from the milk-producing lobules or alveoli within the breast to the nipple, where it can be expelled during breastfeeding.
Step-by-step explanation:
The mammary glands in the breast are composed of lobes, each containing smaller structures called lobules. Within these lobules are milk-producing alveoli. The produced milk then travels through a network of ducts known as lactiferous ducts. These ducts converge toward the nipple, carrying the milk from the lobes to the exterior of the breast.
During breastfeeding, the contraction of myoepithelial cells surrounding the alveoli helps propel the milk through the lactiferous ducts to the nipple, where it is released for the infant to suckle. The lactiferous ducts play a crucial role in the transport of milk and are essential for the proper functioning of the mammary glands.