Preparing Your Daughter for Changes A young girl's first period should not happen out of nowhere; it should never be a complete surprise. Anatomy of the Breasts Each breast has 15 to 20 sections (lobes), which are arranged like the petals of a daisy. Each lobe has many smaller lobules, which end in dozens of tiny bulbs that can produce milk. Anatomy of Female Pelvic Area The female pelvic area contains a number of organs and structures: the endometrium, uterus, ovaries, cervix, vagina, and vulva. Normal Growth A child's growth not only involves the length and weight of his or her body, but also internal growth and development. Puberty: Adolescent Female Girls experience puberty as a sequence of events, and their pubertal changes usually begin before boys of the same age. The first pubertal change in girls usually is breast development. Normal Breast Development and Changes Breast development occurs in distinct stages, first before birth, and again at puberty and during the childbearing years. Changes also occur to the breasts during menstruation and when a woman reaches menopause. Understanding the Teen Brain Parents need to realize the rational part of a teen’s brain isn’t fully developed and won’t be until he or she is 25 years old or so. Cognitive Development During adolescence, the developing teenager acquires the ability to think systematically about all logical relationships within a problem. Relationship Development Adolescent attention often shifts to a more intense focus on social interactions and friendships expanding from same sex friends to same sex groups of friends to heterosexual groups of friends. Healthy Eating During Adolescence Encourage your teen to eat three balanced meals a day, with fruits or vegetables as snacks.