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27 Cards in this Set
- Front
- Back
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period of prenatal development up to two weeks, in which fertilization, implantation, and the development of the placenta begins |
zygote |
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period of prenatal development between six weeks and 30 weeks in which growth and finishing touches are made |
fetus |
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"head to tail" head, brain, and eyes develop earliest |
cepholocaudal development |
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"near to far" organs near center of body develop first |
proximodistal development |
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during the germinal period, inner mass of cells become embryos |
blastocyst |
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during the germinal period, outer layer of cells that will become the placenta |
trophoblast |
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during th germinal period, the attachment of the zygote |
implantation |
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during the embryonic stage, digestive and respitory systems are developed |
endoderm |
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during the embryonic stage, bones, muscles, circulatory system are developed |
mesoderm |
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during the embryonic stageskin, brain, nervous system, sensory receptors are developed |
ectoderm |
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prenatal stage that occcurs at approximately 2-8 weeks |
embryonic |
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water sac |
amnion |
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becomes lining of placenta |
chorion |
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interchange point: both mother and baby's skin tissue meet but do not directly mix |
placenta |
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baby's veins and arteries, stem cells, attached to belly button |
umbilical cord |
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during the 6th-8th week of pregnancy, Y-chromosome produces testosterone and causes.. |
masculinization of brain and genetalia |
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during this stage that lasts from 8 weeks until birth, organs and body become more complex, eyelids and toenails develop, appearance of bone, and memory develops |
fetal stage |
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at birth, babies have ______ neurons but only 1-2 neurotransmitters |
100 billion |
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connectivity and functioning of neurons develop during the ____ trimester |
3rd |
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_____ and _____ are birth defects that can occur if the spinal tube doesn't close |
spina bifida and anacephely |
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the process by which neurons are created from neural stem cells and progenitor cells |
neurogenesis |
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Two types on non-invasive prenatal assesments |
ultra sounds, fetal MRI |
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a very invasive type of prenatal assessment is called _____, where amniotic fluids are tested. |
amniocentesis |
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A type of invasive prenatal assessment where cells are taken from embryo and tested is called _______. |
embryoscopy |
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A type of invasive prenatal assessment where tissue from the placenta is analyzed |
Chronic Villus sampling |
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Three treatments for infertility |
Surgery, hormones, IVF. |
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period of prenatal development between two and six weeks in which arms, legs, face and muscles develop, as well as the heart begins beating. |
embryo |
