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  Encyclopedia of Keywords > Nature > Life > Animals > Fetus   Michael Charnine

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  1. A fetus is a parasite, but some people think of parasites as negative things only, when they are not (although they can be).
  2. The fetus is an organism that is directing her own development while the blood cell is merely a part of a larger organism. (Web site)
  3. A fetus is a pre-cursor to born human life.
  4. Fetus: The unborn offspring from the end of the 8 th week after conception (when the major structures have formed) until birth. (Web site)
  5. For example, the word "fetus" is routinely misused. (Web site)


  1. The fetus has a hand and startle reflex.
  2. The head comprises nearly half of the fetus' size.
  3. The fetus begins storing iron, calcium, and phosphorus.
  4. The fetus then descends to the cervix, where it is pushed out into the vagina, and eventually out of the female. (Web site)
  5. I also had intended to find another speaker on the history of the fetus as a "second patient". (Web site)


  1. Amniotic fluid is the watery liquid surrounding and cushioning a growing fetus within the amnion.
  2. The inner membrane, the amnion, contains the amniotic fluid and the fetus.
  3. The amniotic sac is the sac in which the fetus develops. (Web site)

Blood Supply

  1. For example, the umbilical cords of monoamniotic twins can become entangled, reducing or interrupting the blood supply to the developing fetus.
  2. U umbilical cord : the source of attachment of the fetus to the maternal blood supply.

Umbilical Cord

  1. In humans, the umbilical cord in a full term fetus is usually about 50 cm long and about 2 cm in diameter. (Web site)
  2. The source, known as Wharton's Jelly, surrounds the three umbilical cord blood vessels connecting the fetus and mother. (Web site)
  3. The umbilical cord develops from the same sperm and ovum from which the placenta and fetus develop, and contains remnants of the yolk sac and allantois. (Web site)


  1. Beyond the eighth week, the developing human is then called a fetus. (Web site)
  2. ISBN 0-87893-243-7.   ^ 3D Pregnancy (large image of fetus at 4 weeks after fertilization).
  3. This is important when the fetus is below 35 to 36 weeks gestation, because the lungs may not be mature enough to sustain life. (Web site)
  4. Beginning the eighth week, the sexually neutral fetus activates gene pathways for sex determination, forming testes in XY fetuses and ovaries in XX fetuses. (Web site)


  1. Blood from the placenta is carried to the fetus by the umbilical vein.
  2. In general, the more forward blood flow from the fetus to the placenta through the umbilical artery, the healthier the fetus ( Figure 17).
  3. The placenta is composed of two parts, one of which, the chorion, is genetically and biologically part of the fetus, the other part of the mother.


  1. By the second trimester the fetus can breath in the water, allowing normal growth and the development of lungs and the gastrointestinal tract.
  2. The fetus increases in size during this trimester, and bony parts of the skeleton begin to form. (Web site)
  3. The measurement of serial estriol levels in the third trimester will give an indication of general well-being of the fetus.
  4. By the second trimester the fetus is almost fully formed and distinctly human. (Web site)


  1. It allows the fetus to move freely without the walls of the uterus being too tight against its body. (Web site)
  2. Abortion is not murder, because a fetus is not a human being -- it is a potential human being, i.e.
  3. Those who recognize in the fetus the features of a complex human being intuitively feel strong empathy. (Web site)

Developing Fetus

  1. Thus, by providing the identity of particular body regions, Hox genes determine where limbs and other body segments will grow in a developing fetus or larva.
  2. A developing fetus is highly susceptible to anomalies in its growth and metabolism, increasing the risk of birth defects.
  3. The placenta is the organ attached to the lining of the uterus that links the blood supplies of the developing fetus and the mother. (Web site)

Developing Embryo

  1. The amniotic sac is a tough but thin transparent pair of membranes, which hold a developing embryo (and later fetus) until shortly before birth.
  2. In placental mammals, the umbilical cord is a tube that connects a developing embryo or fetus to its placenta.


  1. The fetus makes active movements.
  2. At nine weeks the fetus' involuntary movements include curling toes to move away from an object,[18] and fingers are structurally able to bend.


  1. It has gained a more specific usage for the development of abnormal cell masses during fetal growth (see pregnancy), causing physical defects in the fetus.
  2. Umbilical cord prolapse is an obstetric emergency during pregnancy or labour that endangers the life of the fetus.
  3. Hydrochlorothiazide; triamterene should be used during pregnancy only if the potential benefit justifies the risk to the fetus.


  1. All major structures are already formed in the fetus, but they continue to grow and develop.
  2. Because the precursors of the organs are formed, fetus also is not as sensitive to damage from environmental exposures as the embryo.
  3. The majority of structures are already formed in the fetus, but they continue to grow and become functional. (Web site)


  1. Prenatal testing is testing for diseases or conditions in a fetus or embryo before it is born.
  2. Prenatal diagnosis employs a variety of techniques to determine the health and condition of an unborn fetus.

Weeks After

  1. Fetus at 18 weeks after fertilization.[16] 16 to 25 weeks  The lanugo covers the entire body.
  2. Fetus at 18 weeks after fertilization.[6] Week 20 (18th week of development) The fetus reaches a length of 20 cm (8 inches).
  3. Fetus at 8 weeks after fertilization.[5] Week 9 (7th week of development) Embryo measures 30 mm (1.2 inches) in length.

Eight Weeks

  1. After eight weeks, the fetus and its organs are more developed and less sensitive to teratogenic incidents.
  2. When the embryo has safely made it to eight weeks it becomes a fetus, which is Latin for baby. (Web site)
  3. Fetus at eight weeks Foetus redirects here. (Web site)


  1. It doesn't matter why the kidney of the fetus or child is not working. (Web site)
  2. Even if a fetus is a person it doesn't have the right to use a woman's body against her will for its development.


  1. Key words: fetus in fetu, spine of fetus, teratoma, twin, intraabdominal mass, parasitic twin.
  2. The fetus in fetu may increase in size and cause local mass effect and hemorrhage ( 12).


  1. They can initiate a pregnancy and then abort the fetus if it is shown to be affected through amniocentesis or chorionic villus sampling.
  2. Most testing for genetic diseases is currently performed through amniocentesis or chorionic villus testing when the fetus is aged 10-16 weeks.


  1. Fetal hemoglobin enhances the fetus' ability to draw oxygen from the placenta.
  2. However, the mother essentiallyprovides nutrition, oxygen, and a safe environment for ther fetus. (Web site)


  1. Although abortion of a fetus before viability is generally legal in the United States following the case of Roe v.
  2. A lawyer appointed for the fetus used the anti-abortion argument that fetuses are separate legal persons with independent rights. (Web site)


  1. The villi begin to branch, and contain blood vessels of the fetus that allow gas exchange between mother and child. (Web site)
  2. The presence of only two vessels in the cord is sometimes related to abnormalities in the fetus, but may occur without accompanying abnormalities. (Web site)


  1. An embryo is called a fetus at a more advanced stage of development and up until birth or hatching.
  2. Animals: The embryo of a placental mammal is defined as the organism between the first division of the zygote (a fertilized ovum) until it becomes a fetus.
  3. Prenatal development is the process in which an embryo or fetus (or foetus) gestates during pregnancy, from fertilization until birth.
  4. In humans, it is called an embryo from the moment of fertilisation until the end of the 8th week of gestational age, whereafter it is instead called a fetus.
  5. Because its lungs are not functioning, circulation in the fetus differs dramatically from that of the baby after birth.


  1. After about two months the embryo changes into a fetus, or an unborn baby.
  2. Early in gestation, a fetus has no hard skeleton - bones form gradually during nine months in the womb.


  1. Pathology of the Fetus and the Infant, 3d ed.
  2. Fetus in fetu is a rare condition in which a fetiform calcified mass often is present in the abdomen of its host, a newborn or an infant.


  1. It forms a barrier (called the "placental barrier"), which filters out some substances that could harm the fetus.
  2. The routine use of diuretics in an otherwise healthy woman is inappropriate and exposes mother and fetus to unnecessary hazard.
  3. The Fallopian tubes carry the ova to the uterus or womb, in which the fetus will develop.
  4. The use of thiazides and triamterene in pregnant women requires that the anticipated benefit be weighed against possible hazards to the fetus.
  5. A new born child, unlike a fetus, is a physically separate entity.


  1. Encyclopedia of Keywords > Nature > Life > Animals
  2. Encyclopedia of Keywords > Nature > Life
  3. Encyclopedia of Keywords > Information > Knowledge
  4. Encyclopedia of Keywords > Society > Humans > Medicine
  5. Glossaries > Glossary of Developmental Biology /
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  Short phrases about "Fetus"
  Originally created: February 19, 2008.
  Links checked: May 21, 2013.
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