Remember, woman on top puts you in charge. The tissue composition ratios of the breast also vary among women. As a mammary gland , the breast is composed of differing layers of tissue , predominantly two types: The T-4 nerve Thoracic spinal nerve 4 , which innervates the dermatomic area , supplies sensation to the nipple-areola complex. Lactation in newborns is caused by hormones from the mother that crossed into the baby's bloodstream during pregnancy. In Ancient Greece there were several cults worshipping the "Kourotrophos", the suckling mother, represented by goddesses such as Gaia , Hera and Artemis. It can be caused by certain drugs such as antipsychotic medications , extreme physical stress, or endocrine disorders. Isis , an Egyptian goddess who represented, among many other things, ideal motherhood, was often portrayed as suckling pharaohs , thereby confirming their divine status as rulers. Lie on your sides, your partner behind you, and have him caress your breasts and nipples before he enters you.
The T-4 nerve Thoracic spinal nerve 4 , which innervates the dermatomic area , supplies sensation to the nipple-areola complex. Retrieved 31 October The areola contains modified sweat glands known as Montgomery's glands. Or he can blow against your nipples, boosting the sensation you feel above and below the belt. These glands secrete oily fluid that lubricate and protect the nipple during breastfeeding. Lie comfortably on your back and have your guy position his head between your legs. This condition of asymmetry is transitory and statistically normal in female physical and sexual development. Brassiere , Cleavage breasts , Toplessness , Modesty , Naturism , and Exhibitionism As is customary in her culture, a bare-breasted Himba woman of northern Namibia wears a traditional headdress and skirt Because breasts are mostly fatty tissue, their shape can -within limits- be molded by clothing, such as foundation garments. The areola has many sebaceous glands, and the skin color varies from pink to dark brown. Compared to other primates, human breasts are proportionately large throughout adult females' lives. In boys and men, abnormal breast development is manifested as gynecomastia , the consequence of a biochemical imbalance between the normal levels of estrogen and testosterone in the male body. The tissue composition ratios of the breast also vary among women. Breast cancer Breast cancer is the most common cause of cancer death among women  and it is one of the leading causes of death among women. Many female deities representing love and fertility were associated with breasts and breast milk. The fat-to-connective-tissue ratio determines the density or firmness of the breast. Normally, males produce lower levels of estrogens and higher levels of androgens , namely testosterone , which suppress the effects of estrogens in developing excessive breast tissue. The size of the areola can vary widely among women. High levels of oxytocin trigger the contraction of muscle cells surrounding the alveoli, causing milk to flow along the ducts that connect the alveoli to the nipple. This continues for approximately four years until the final shape of the breast size, volume, density is established at about the age of At the sides of the chest, the breast tissue can extend into the axilla armpit , and can reach as far to the back as the latissimus dorsi muscle , extending from the lower back to the humerus bone the longest bone of the upper arm. The space between the breast and the pectoralis major muscle, called retromammary space , gives mobility to the breast. These development stages of secondary sex characteristics breasts, pubic hair, etc. Retrieved 9 May The terminal lactiferous ducts drain the milk from TDLUs into 4—18 lactiferous ducts, which drain to the nipple. Physical changes to the breasts are often recorded in the stretch marks of the skin envelope; they can serve as historical indicators of the increments and the decrements of the size and volume of a woman's breasts throughout the course of her life. In the ancient Indian work the Kama Sutra , light scratching of the breasts with nails and biting with teeth are considered erotic. In addition to the milk glands, the breast is also composed of connective tissues collagen , elastin , white fat, and the suspensory Cooper's ligaments.
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