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Female Reproductive System. Function is to make eggs and provide a place to support and nourish a developing human. Stages of Puberty in Females.
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Female Reproductive System Function is to make eggs and provide a place to support and nourish a developing human
Stages of Puberty in Females 8 to 9 years oldGrowth spurt begins at this age. Breasts are pre-pubertal, meaning they have no visible tissue. Girls also have no pubic hair. 11 years oldThe areola (pigmented area around the nipple) enlarges and becomes darker. It raises to become a mound around the areola with a small amount of breast tissue underneath. This is called a bud. Also, a few long, slightly darkened hairs appear on the vagina (usually on the labia). The growth spurt has probably slowed by this age, as well. 12 years oldBreast tissue appears past the edge of the areola. A moderate amount of curly, pigmented and coarse appears hair on the mons pubis (the raised, fatty area above the labia). Hair begins to spread more laterally and 70 percent of girls have their first menstrual period.13 years oldThere is continued development of breast tissue and the areola and nipple now protrude. The growth spurt usually ends during this time and body fat reaches a mature proportion (26 percent). After menstruation begins, girls possibly grow three to four inches more, although it is usually less. 14 years oldPubic hair has reached its adult growth rate and some long pigmented hairs may grow on the inner thighs. 15 years oldBreasts have usually reached their adult size by this time.
Ovaries • Are the female reproductive organs that produce eggs and the hormones estrogen and progesterone • Eggs (ova) – sex cells that are produced by the ovaries and can be fertilized by sperm • All of the eggs a female will ever have, are in her 2 ovaries when she is born • Make the hormones estrogen and progesterone • Regulate the monthly release of an egg and prepare the body for pregnancy
Vagina • Female reproductive organ that connects the outside of the body to the uterus and that receives sperm during reproduction • Urethra – above and separate from the vagina – carries urine from the bladder to the outside of the body
Fallopian Tubes and Uterus • Fallopian tubes – the female reproductive organs that transport an egg from the ovary to the uterus • Uterus – female reproductive organ that provides a place to support a developing human • Muscular cavity the size of a fist
What is a Menstrual Cycle? • A monthly series of hormone-controlled changes that prepare the uterine lining for a pregnancy • Increased levels of estrogen cause uterine lining to thicken • Ovulation – the release of an egg from a follicle in the ovary • High levels of estrogen and progesterone further thicken and maintain the uterine lining • If pregnancy does not occur – estrogen and progesterone levels quickly fall • Menstruation – breakdown and discharge of the uterine lining out of the vagina • Usually lasts between 3 and 7 days
Average cycle lasts 28 days • Can vary from one individual to another and from month to month • Ovulation usually occurs on the 14th day • Environmental factors can influence the timing of a cycle • Stress • Diet • Travel • Exercise • Weight gain or loss • illness
What is a breast? • Internally breast consist of 15 to 25 lobes that radiate around and open at the nipple • Each lobe is composed of smaller lobules these contain alveoli that produce milk when women are lactating. • Non-pregnant women glandular structure is undeveloped hence the breast size is largely due to the amount of fat deposit.
