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During pregnancy, a woman's uterus houses and protects a developing fetus for about nine months, or 40 weeks. Within the uterus, the fetus is surrounded by fluid, which in the second and third trimester is produced primarily by fetal urination.; amniocentesis; development; pregnancy; During pregnancy a woman's uterus houses and protects the developing fetus for approximately 40 weeks.; Not every woman undergoes a traditional vaginal delivery with the birth of her child.; During pregnancy, a woman's uterus houses and protects a developing fetus for about nine months.; During pregnancy a woman's uterus nurtures and protects the developing fetus during gestation. A full-term pregnancy is approximately 40 weeks.; During ovulation, an ovum, or egg, is released from a woman's ovary each month. ; At the culmination of approximately 40 weeks of pregnancy, a woman will begin to experience labor. Labor signifies the impending delivery of the baby.; During pregnancy, a woman's uterus houses and protects the developing fetus. After approximately 40 weeks, the fetus reaches full term and is ready to be born.; Pregnancy and delivery involve the entire female reproductive system, including the ovaries, fallopian tubes, uterus, and vagina.; The testicles of adult men produce about one-half billion sperm each day. By contrast, a woman's ovaries are stimulated to grow only a few eggs each month. ; The testicles of adult men produce about half a billion sperm each day. By contrast, women generally release only one egg per month.; The heart and circulatory system of a fetus begin to form soon after conception.; During pregnancy, a woman's uterus will house and protect a developing fetus for about nine months.; During pregnancy, the intestinal tract of a fetus is lined with a dark-green fecal material called meconium.; The female reproductive system consists of the ovaries, fallopian tubes, uterus, and vagina. ; In order to attain an erection, messages from the brain and other sense organs trigger the arteries of the penis to dilate. ; The testicles of adult men produce about half a billion sperm each day. ; Endometriosis is a disorder of the female reproductive system. ; The female reproductive system consists of the ovaries, fallopian tubes, uterus, and vagina.; Sperm are male reproductive cells that are formed in the seminiferous tubules of the testes.; The uterus is a hollow, pear-shaped organ of the female reproductive system and is sometimes referred to as the womb.; A normal male erection can occur when physical or psychological stimulation triggers impulses from the brain to travel down to the nerves of the penis. ; The genital areas of mature men and women are often covered by thatches of coarse pubic hair. ; The prostate is part of the male reproductive system. It is a small, round gland that is located in front of the rectum at the base of the bladder.; During a prostate exam, a doctor may choose to take a needle biopsy sample to check for prostate cancer. ; The prostate is part of the male reproductive system. ; Every month, a woman's body prepares itself for the possibility of conception and pregnancy by going through a menstrual cycle. ; A woman's reproductive system contains two ovaries, which are vital in the role of reproduction.; Menopause, commonly known as the change of life, is a natural event in a woman's aging process. ; A hernia is the swelling or protrusion of an organ through an opening in the abdominal wall. ; Impotence is a disorder of the male reproductive system and is the inability to maintain an erection of the penis.; Conception occurs when a sperm joins an egg in a woman's body. ; A woman's reproductive system includes the uterus, the ovaries, the fallopian tubes, and the vagina. ; Herpes, or herpes simplex, is a viral infection that causes sores most often appearing on the face or in the genital area. ; Congenital heart defect is a term used when one or more defects in the structure of the heart are present at birth. ; The uterus is the central organ of a woman's reproductive system. ; Far too often, breast cancer is detected after it has spread and affected other parts of the body.; A woman's breast is primarily composed of fatty tissue and mammary glands. ; A healthy breast is primarily composed of fatty tissue and mammary glands. ; A woman's breast is primarily composed of fatty tissue and mammary glands. ; The female breast is primarily composed of fatty tissue and mammary glands.; A woman's breast is primarily composed of fatty tissue and mammary glands.; The prostate is a small, round gland of the male reproductive system that is located in front of the rectum, at the base of the bladder.; White blood cells, which are produced in the bones, are a major component of the body's immune system.;