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Definition
| the first 2 weeks of development after conception; rapid cell division |
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Definition
| 3rd thru 8th week after conception; rudimentary forms of all anatomical structures develop |
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Term
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Definition
| 9th week after conception until birth; organs grow in size and complexity |
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Definition
| beginning about a wk after conception; the burrowing of the organism into the lining of the uterus |
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Definition
| at least 60% of natural conceptions and 70% of all in vitro conceptions fail to properly implant |
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Term
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Definition
| about 31% of zygotes grow and survive to become living newborn babies |
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Term
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Definition
| a fold of outer embryonic cells that appears about 3weeks after conception and later develops into the CNS |
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Term
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Definition
| the age (about 22 wks) at which a fetus can survive outside the mother's uterus if specialized medical care is available |
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Term
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Definition
| the organ that encases the embryo and fetus |
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Term
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Definition
| agents and conditions including viruses, drugs, chemicals, stressors, and malnutrition that can impair prenatal development and lead to birth defects or even death |
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Definition
| teratogens that tend to harm the prenatal brain,affecting the future child's intellectual and emotional functioning |
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Term
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Definition
| the process of weighing the potential outcomes of a particular event, substance or experience to determine the likelihood of harm |
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Term
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Definition
| in prenatal development, the time when a particular organ or other body part is most susceptible to teratogenic damage (entire embryonic stage)first 2 months |
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Term
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Definition
| a particular teratogen is relatively harmless in small doses but becomes harmful once exposure eaches a certain level |
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Term
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Definition
| teratogens potential for causing harm increases when interacts with another teratogen or risk factor |
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Term
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Definition
a birthweight less than 5 1/2 pounds
second most common cause of infant death in US |
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Term
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Definition
| birth occuring 3 weeks or more before the full term of pregnancy has elapsed |
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Term
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Definition
| small for gestational age |
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Term
| leading cause of infant death in US |
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Definition
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Term
| third cause of death in US |
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Definition
| sudden infant death syndrome |
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Term
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Definition
| most common surgery for birth. incision made in opening of vagina |
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Term
| what % of births take place at home |
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Definition
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Term
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Definition
| nearly 2 trillion in life time |
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Term
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Definition
| lack of oxygen that when prolonged can cause brain damage or death |
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