The nipple, also called papillary ostium or papilla
, is the area of ??darker skin in the middle of the breast. The nipple is made up of the areola and nipple, with a sphincter muscle
allowing for contraction. The nipple skin is particularly thin so as to allow breast milk
to pass through during breastfeeding
. The nipple is a sensitive area, and may become erect when it is cold or under the influence of excitement or sexual stimulation.
Original article published by
. Translated by christelle.b