I understand the actual knob on a breast for a feeding purpose . Wouldn’t just that be enough ? Why the areola around it especially with a different shade of colour to the rest of the breast ?
In: Biology
* They darken during pregnancy to help a newborn find the nipple.
* They secrete a liquid via the Montgomery Glands to keep the nipples from chafing/cracking during the breastfeeding period
* Stimulation of the areola keeps the nipple erect for easier feeding/latching
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