The A to N Cup Show

Bresat’s Function

Sexual role

Breasts play an important part in human sexual behavior. They are one of most visible or obvious female secondary sex characteristics, and play an important role in sexual attraction of partners, and pleasure of the individual. On sexual arousal breast size increases, venous patterns across the breasts become more visible, and nipples harden. During sexual intercourse it is common practice to press or massage breasts with hands. Oral stimulation of nipples and breasts is also common. Some women can achieve breast orgasms. In the ancient Indian work the Kama Sutra, marking breasts with nails and biting with teeth are explained as erotic.

Breastfeeding

The breasts of a woman who is six months pregnant.

The primary function of mammary glands is to nurture young by producing breast milk. The production of milk is called lactation. (While the mammary glands that produce milk are present in the male, they normally remain undeveloped.) The orb-like shape of breasts may help limit heat loss, as a fairly high temperature is required for the production of milk. Alternatively, one theory states that the shape of the human breast evolved in order to prevent infants from suffocating while feeding.[8] Since human infants do not have a protruding jaw like human evolutionary ancestors and other primates, the infant’s nose might be blocked by a flat female chest while feeding.[8] According to this theory, as the human jaw receded, the breasts became larger to compensate.

Milk production unrelated to pregnancy can also occur. This galactorrhea may be an adverse effect of some medicinal drugs (such as some antipsychotic medication), extreme physical stress or endocrine disorders. If it occurs in men it is called male lactation. Newborn babies are often capable of lactation because they receive the hormones prolactin and oxytocin via the mother’s bloodstream, filtered through the placenta. This neonatal liquid is known colloquially as witch’s milk.

This post about breast’s sexual role.

A Cup—Airport