Skip to content
My WebMD Sign In, Sign Up

Infertility & Reproduction Health Center

Font Size

Male and Female Reproductive Systems - Topic Overview

The female reproductive system consists of two ovaries, two fallopian tubes, the uterus, the cervix and the vagina. During ovulation, an egg is produced by either the right or left ovary about 11 to 17 days before the woman's next menstrual period, or approximately once a month. The egg is released from the ovary into a fallopian tube and swept by tiny hairlike cells (cilia) and muscle action into the uterus.

See a picture of the female reproductive system .

The male reproductive system consists of the penis, two testicles, two epididymides, two vas deferentia, two seminal vesicles, and the prostate gland.

Sperm develop in the testicle and finish maturing in the epididymis. When the man comes (ejaculation), the sperm move out of the epididymides through the vas deferens and into the tube (urethra) that runs through the penis. Semen (the thick liquid associated with sperm) is produced in the seminal vesicles and prostate gland and added to the sperm before ejaculation from the penis. Semen protects the sperm from the acid environment in the vagina.

See a picture of the male reproductive system .

For pregnancy to occur, sperm must travel up the vagina through the uterus and into the fallopian tube to combine with an egg (fertilization) soon after ovulation. The fertilized egg must then implant in the lining of the uterus.

Hormones and reproduction

In both men and women, reproduction begins in the brain. A part of the brain (hypothalamus) produces a substance called gonadotropin-releasing hormone (GnRH). GnRH causes the pituitary gland to release two hormones into the bloodstream: luteinizing hormone (LH) and follicle-stimulating hormone (FSH).

In men, LH causes the release of the male hormone testosterone, while FSH causes the testicles to produce sperm. In women, LH and FSH cause eggs to mature and be released (ovulation). They also cause production of the female hormones estrogen and progesterone.

Many problems with infertility are caused by too little or too much of these hormones, the pattern of hormone levels over time, or problems in the hypothalamus or pituitary gland.

1

WebMD Medical Reference from Healthwise

Last Updated: March 19, 2010
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.
Next Article:

Male and Female Reproductive Systems Topics

Today on WebMD

female reproductive system
Article
healthtool ovulation calculator
Tool
 
Low Tech Fertility Treatment
Video
Getting Pregnant
Article
 
Which Treatment Is Right For You
Slideshow
Conception Myths
Article
 
eddleman prepare your body pregnancy
Video
Conception
Slideshow
 
Charting Your Fertility Cycle
Article
Fertility Specialist
Article
 
Understanding Fertility Symptoms
Article
invitro fertilization
Article
 

WebMD Special Sections