In the centre of the areola is the nipple. Around nine milk ducts and nerves can be found in each nipple. Areolae: The nipple's surrounding dark-colored, circular region of skin is known as an areola. For women who want to breastfeed, flat or inverted nipples can be a possible issue. The nipple is extracted into a tiny, plastic cup that resembles a thimble using mild suction. The nipple will remain permanently erect after a few weeks of wearing it every day.