What is the female reproductive system?
The female reproductive system is the system in a woman's body with the purpose of making babies. The female reproductive system includes both external genital organs (outside the body) and internal genital organs (inside the body).
The external genital organs include:
Labia: Two sets of skin folds that cover the opening to the vagina
Clitoris: Organ where the labia meet that feels pleasure during sex
Opening to the vagina
Not all of your external genitals are your "vagina." The vagina is really just the birth canal.
The internal genital organs include:
Vagina: Birth canal
Uterus (womb): The internal organ where a fetus grows and develops before birth
Cervix: The thick, round end of the uterus, which has an opening for menstrual blood to flow out and for a baby to be delivered
Ovaries: A pair of organs that make eggs and female hormones such as estrogen
Fallopian tubes: The tubes through which eggs pass from the ovaries to the uterus
External Female Genital Organs
 |
Internal Female Genital Organs
 |
How does the female reproductive system work?
The main activities of the female reproductive system include:
Pregnancy Normal Pregnancy : Conceiving and growing a baby
A newborn girl's ovaries already have all the eggs she will ever have. But these eggs can't become babies until the girl's reproductive system goes through a series of changes called puberty Puberty in Girls Puberty is the period of growth and development in which children and adolescents develop adult physical features, such as breasts or pubic hair, and become able to reproduce (have and create... read more . During puberty:
Hormones (chemical messengers) released by the brain cause the ovaries to develop
The developing ovaries release the female sex hormone estrogen
Estrogen causes the rest of the reproductive system to develop
In the monthly menstrual cycle Menstrual Cycle A menstrual cycle is the process a woman's reproductive system goes through each month to release an egg from the ovaries and make a pregnancy possible. A menstrual period (menstruation) is... read more :
An egg matures and is released (a process called ovulation)
The lining of the uterus swells up with blood vessels so it's ready to accept the egg if it gets fertilized by a man's sperm
A fertilized egg attaches to the lining of the uterus and starts growing OR
The egg doesn't get fertilized, so it doesn't attach, and the lining of the uterus comes off and is released as menstrual blood
If a woman doesn't become pregnant, the menstrual cycle repeats about once a month. Women have a menstrual cycle until about middle age. Menopause Menopause Menopause is when women stop having periods (stop menstruating) and can no longer get pregnant. Menopause usually happens after age 40. In the United States, the average age for menopause is... read more 
is when the cycles stop.
Conception is when a man's sperm joins with (fertilizes) a woman's egg. Fertilization usually happens in one of the fallopian tubes.
The fertilized egg travels down the fallopian tube into the uterus
The fertilized egg attaches to the inside wall of the uterus and starts growing
It grows into a fetus and a placenta—the placenta is what attaches the fetus to the uterus
The reproductive system is controlled by hormones. Hormones are chemical messengers made in certain parts of your body that travel through the blood to signal other parts of the body what to do.
Some hormones come from the pituitary gland in the brain. Reproductive hormones from the pituitary gland rise and fall each month and trigger the menstrual cycle. If you become pregnant, your reproductive organs produce other hormones that turn off your menstrual cycle and signal the uterus to grow and support the baby. After birth, another hormone signals your breasts to make milk to feed your baby.
What can go wrong with a woman's reproductive system?
The most common problems with the reproductive system involve hormones. A woman's reproductive system involves many hormones that work together in complicated ways. Many different problems can interfere with the hormones, which can result in:
Delayed puberty
Early puberty
Irregular menstrual periods
No menstrual periods
Inability to get pregnant
Trouble keeping a pregnancy
Many diseases, such as infections and cancer, can affect the reproductive organs.
