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Found Fetus 46 times.

Displaying results 1 to 10.

1. Abortifacient
A drug or compound that induces the expulsion of an embryo or fetus .

2. Abortion
The expulsion or removal of an embryo or fetus from the mother prematurely; this can be done as an artificial procedure, but it often happens naturally when the mother's body expels the embryo/fetus because it has died, has genetic or developmental defects, or because of infection or illness in the mother. Natural abortions are typically called "miscarriages". Medically-induced abortions, which can be completed with surgery or with hormone drugs, are done because the embryo/fetus is unwanted, deformed, not likely to live, or endangers the mother's life or health.

3. Abruptio placentae
This is the premature separation of the placenta, i.e. separation of the placenta from the site of implantation on the uterus before the delivery of the fetus. It is a life threatening condition for the fetus and occurs about 1 in 500 to 750 deliveries.

4. Alpha thalassemia
One of two major types of thalassemia , a genetically inherited disease, in which one of the two types of polypeptide s making up the hemoglobin protein is defective or missing. Hemoglobin proteins are composed of four polypeptides -- two "alpha chains" and two "beta chains". In alpha thalassemia, the alpha chains are defective or missing (see also beta thalassemia ). This disease mainly affects individuals of Southeast Asian, Chinese, and Filipino ancestry; in its most severe form it results in the death of the fetus or newborn. Individuals with less severe cases have varying degrees of anemia .

5. Amniocentesis
A technique for testing the genetic health of a fetus by inserting a needle through the mother's abdominal wall into the uterus and extracting a small amount of the amniotic fluid, the fluid that surrounds the fetus. Sloughed-off fetal cells ( fibroblast s) found in this fluid are then cultured and their DNA examined for defects. This procedure is done in the second trimester, and because of the time needed to do the culture, results aren't generally available until after the 20th week of pregnancy.

6. Biparietal diameter (BPD)
One of the ultrasound measurements of the human fetus (others are head circumference, abdominal circumference, and femur length) which correlates with the gestational age.

7. Birth control (contraception, family planning)
In general, birth control or contraception is anything that prevents a woman from becoming pregnant. The most basic and cheapest form of contraception is abstinence (not engaging in sexual intercourse at all). However, abstaining from sex can cause great stress and frustration in some, since the human sex drive can be quite powerful. A variation on abstinence is fertility awareness (also known as "natural family planning"). This method involves a couple avoiding intercourse during the times that the woman is most likely to be fertile. This method requires that the woman be very aware of her own body and her reproductive cycle; some estimate that this method has a 70%-98% rate of success, depending on the regularity of the woman's cycle and the specific monitoring technique used. Signs that a woman has ovulated (and is therefore fertile) include a sudden change in basal body temperature, changes in vaginal mucus, or a combination of the two. A woman is least likely to be fertile during her menstrual period and for a few days thereafter. Barrier methods of birth control work by preventing sperm from reaching the egg. Barrier methods work best in conjunction with spermicides (creams or jellies that contain chemicals that kill sperm and sometimes disease-causing microorganisms). Because barrier methods also prevent the exchange of body fluids to varying degrees, they are also useful in preventing the transmission of venereal disease s. Barrier methods include: * condom s * female condom s * diaphragm s * cervical cap s * contraceptive sponges Other birth control methods work by altering a woman's hormones so as to render her infertile (male hormonal birth control is being researched). Hormonal methods include: * Depo Provera * birth control pills * Norplant * "morning after" pills Other women may use intrauterine devices (IUDs), which work mainly by preventing the fertilized egg from implanting in the wall of the uterus. Other women use abortion (surgery to remove or drugs to induce the expulsion of an embryo or fetus) as a last-ditch effort at birth control. If a couple wants no children at all, they may undergo surgery to render themselves sterile. In women, this procedure is generally a tubal ligation (cutting or blocking the Fallopian tubes, which carry the eggs from the ovaries). In males it is a vasectomy (cutting or blocking the tubes that carry sperm from the testis). These procedures can sometimes be reversed.

8. Chorion
The chorion is the outermost membrane enclosing the fetus . It is formed from tissues on the outside of the embryo such as the trophoblast , and the part of it attached to the uterus wall eventually develops into the placenta .

9. Chorionic
Referring to the chorion or membrane enclosing the fetus .

10. Chorionic villus sampling (CVS)
Taking a biopsy of the placenta , usually at the end of the second month of pregnancy, to test the fetus for genetic abnormalities ( mutation s).


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