How go the female reproductive system work?

The mrs reproductive system gives several functions. The ovaries create the egg cells, called the ova or oocytes. The oocytes space then transported come the fallopian tube where fertilization by a sperm may occur. The fertilized egg climate moves come the uterus, where the uterine lining has thickened in response to the typical hormones of the reproductive cycle. When in the uterus, the fertilized egg can implant right into thickened uterine lining and continue to develop. If implantation does not take place, the uterine lining is shed as expression flow. In addition, the woman reproductive mechanism produces mrs sex hormones that preserve the reproductive cycle.

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During menopause, the female reproductive system gradually stops make the female hormones vital for the reproductive cycle come work. In ~ this point, expression cycles can come to be irregular and also eventually stop. One year ~ menstrual cycles stop, the woman is considered to it is in menopausal.

What components make-up the mrs

The mrs reproductive includes both external and internal structures.

The duty of the outside female reproductive structures (the genital) is twofold: To enable sperm to get in the body and to protect the inner genital offal from infectious organisms.

The main outside structures the the female reproductive device include:

Labia majora: The labia majora (“large lips”) enclose and also protect the other exterior reproductive organs. During puberty, hair expansion occurs ~ above the skin that the labia majora, which likewise contain sweat and oil-secreting glands.Labia minora: The labia minora (“small lips”) have the right to have a selection of sizes and shapes. They lie just inside the labia majora, and surround the openings to the vagina (the canal the joins the lower part of the uterus to the external of the body) and also urethra (the tube that carries urine indigenous the bladder come the external of the body). This skin is very delicate and can end up being easily irritated and swollen.Bartholin’s glands: this glands are located next to the vaginal opened on every side and produce a fluid (mucus) secretion.Clitoris: The two labia minora satisfy at the clitoris, a small, sensitive protrusion the is similar to the penis in males. The clitoris is extended by a wrinkles of skin, referred to as the prepuce, which is similar to the foreskin at the end of the penis. Like the penis, the clitoris is really sensitive come stimulation and can become erect.


The inner reproductive guts include:

Vagina: The vagina is a canal the joins the cervix (the lower component of uterus) to the external of the body. It likewise is known as the birth canal.Uterus (womb): The uterus is a hollow, pear-shaped organ that is the house to a developing fetus. The uterus is divided into 2 parts: the cervix, i beg your pardon is the lower part that opens into the vagina, and the main body of the uterus, referred to as the corpus. The corpus can quickly expand to hold a occurring baby. A canal v the cervix permits sperm come enter and also menstrual blood to exit.Ovaries: The ovaries are small, oval-shaped glands the are located on either next of the uterus. The ovaries produce eggs and hormones.Fallopian tubes: These space narrow tubes that room attached come the upper part of the uterus and serve as pathways because that the ova (egg cells) to take trip from the ovaries come the uterus. Fertilization of an egg by a sperm generally occurs in the fallopian tubes. The fertilized egg then moves to the uterus, whereby it implants come the uterine lining.


What happens during the expression cycle?

Females of reproductive age (beginning everywhere from 11 come 16 year of age) endure cycles the hormonal task that repeat at about one-month intervals. Menstru way "monthly” – bring about the hatchet menstrual cycle. Through every cycle, a woman’s body prepares for a potential pregnancy, whether or no that is the woman’s intention. The term menstruation describes the regular shedding the the uterine lining. Many women contact the days the they an alert vaginal bleeding your “period,” “menstrual” or cycle.

The typical menstrual cycle takes about 28 days and occurs in phases. This phases include:

The follicular phase (development the the egg)The ovulatory step (release that the egg)The luteal phase (hormone level decrease if the egg does no implant)


There room four major hormones (chemicals the stimulate or control the activity of cells or organs) involved in the expression cycle. These hormones include:

Follicle-stimulating hormoneLuteinizing hormoneEstrogenProgesterone

Follicular phase

This step starts on the an initial day of your period. During the follicular step of the menstrual cycle, the following occasions occur:

Two hormones, follicle stimulating hormone (FSH) and luteinizing hormone (LH) room released indigenous the mind and take trip in the blood to the ovaries.The hormone stimulate the expansion of around 15 to 20 eggs in the ovaries, each in its very own "shell," called a follicle.These hormone (FSH and also LH) additionally trigger boost in the manufacturing of the woman hormone estrogen.As estrogen levels rise, favor a switch, it turns off the manufacturing of follicle-stimulating hormone. This mindful balance the hormones enables the body to limit the number of follicles that will prepare eggs to be released.As the follicular phase progresses, one follicle in one ovary becomes dominant and continues come mature. This leading follicle suppresses every one of the various other follicles in the group. As a result, they avoid growing and also die. The leading follicle proceeds to develop estrogen.

Ovulatory phase

The ovulatory phase (ovulation) generally starts about 14 job after the follicular phase started, however this have the right to vary. The ovulatory step falls in between the follicular phase and also luteal phase. Most women will have actually a menstrual period 10 come 16 days after ovulation. During this phase, the following occasions occur:

The rise in estrogen native the dominant follicle triggers a surge in the amount of luteinizing hormone that is produced by the brain.This reasons the dominant follicle to relax its egg indigenous the ovary.As the egg is exit (a procedure called ovulation) it is captured by finger-like projections on the end of the fallopian tubes (fimbriae). The fimbriae move the egg right into the tube.For one to 5 days prior to ovulation, numerous women will notification an rise in egg white cervical mucus. This rubber is the vaginal discharge the helps come capture and nourish sperm ~ above its method to satisfy the egg for fertilization.

Luteal phase

The luteal phase starts right ~ ovulation and also involves the adhering to processes:

Once it releases its egg, the north ovarian follicle creates into a brand-new structure referred to as the corpus luteum.The body luteum secretes the hormone estrogen and also progesterone. Progesterone prepares the uterus because that a fertilized egg to implant.If intercourse has taken place and also a man's sperm has fertilized the egg (a procedure called conception), the fertilized egg (embryo) will certainly travel v the fallopian pipe to implant in the uterus. The woman is now taken into consideration pregnant.If the egg is not fertilized, the passes v the uterus. Not needed to assistance a pregnancy, the lining of the uterus breaks down and sheds, and the following menstrual duration begins.

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How many eggs go a woman have?

During fetal life, there are about 6 million come 7 million eggs. Native this time, no new eggs are produced. In ~ birth, there are about 1 million eggs; and also by the moment of puberty, only about 300,000 remain. The these, just 300 to 400 will certainly be ovulated throughout a woman's reproductive lifetime. Fertility have the right to drop as a woman ages because of decreasing number and also quality that the continuing to be eggs.