Nipple

By: Tim Taylor

Last Updated: Dec 13, 2016

A nipple is located near the tip of each breast, and it is surrounded by a circular area of pigmented skin called the areola. A mammary gland is composed of fifteen to twenty irregularly shaped lobes, each of which includes alveolar glands, and a duct (lactiferous duct) that leads to the nipple and opens to the outside.