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24 Cards in this Set
- Front
- Back
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age of viability
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the earliest age at which fetuses could survive if they were born at that time; generally accepted as 24 weeks, or fetuses weighing more than 400 g
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amniocentesis
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the withdrawel of amniotic fluid from the uteru by means of introducion of a neele through the abdominal and uterine wall
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amniotic membrane
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the innermost membrane surrounding teh fetus; it secretes amniotic fluid
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cephalocaudal principle
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the progression of development in a fetus and child is from head to tail
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chorionic membrane
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the outer fetal membrane that forms the sace that contains the amniotic fluid
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chorionic villi
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projections of the trophoblast that produce human chorionic gonadotropin and begin osmosis of nutrients to the embryo
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decidua
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term used for the thickening endometrium after fertilization
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embryo
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the intrauterine growth period from the time following implantation until organogenesisis complete (10th day until 5-8 weeks)
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estimated date of birth
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EDB - the predicted date on which a baby will be born (aka EDC or EDD)
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fertilization
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the union of the sperm and ovum
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fetoscopy
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the visualization of the fetus by inspection through a fetoscope
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fetus
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the developing struture from the 8th week postfertilization until birth
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foramen ovale
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an opening between the atria of the heart during intrauterine life
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hydramnios
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an excessive amount of amniotic fluid (generally over 2000 mL)
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implantation
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nidation; the attachment of the zygote to the uterine endometrium
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McDonald's rule
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the fundus-to symphysis distance in cm is equal to the week of gestation between the 20th to 31st week of pregnancy
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meconium
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a sticky, tarlike, blackish-0green, odorless material formed from mucus, vernix, lanugo, hormones, and carbohydrates that accumulates during intrauterine life in the intestine
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nonstress test
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assessment of fetal well-being determined from examination of the fetal heart rate in relationship to fetal activity
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oligohydramnios
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a decreased amount of amniotic fluid
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organogenesis
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organ formation
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surfactant
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a lipoprotein secreted by the alveoli cells to reduce surgace tension in alveoli
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trophoblast
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the outer layer of the blastocyst
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umbilical cord
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the structure composed of one vein and two arteries that connects the placenta to the fetus
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zygote
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a fertilized ovum
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