Week+3+prenatal+2 - Fingers, toes, skin, features, lungs,...

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Click to edit Master subtitle style  11/17/10 Rapid and complex  developmental period Prenatal Development
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 11/17/10 The Three Periods of Pregnancy Germinal (Period of the  Zygote) First two weeks, ends  with implantation Embryonic  Period 2-8 weeks, organogenesis Fetal Period 9 weeks – birth
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 11/17/10 Life-Support System Placenta:  connects the  developing fetus to the uterine  wall to allow nutrient uptake,  waste elimination, and gas  exchange via the mother's blood  supply.  Umbilical cord:  connects baby  to placenta
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 11/17/10 The Driving Force: The Brain Basic architecture assembled during  germinal and embryonic periods Neural tube: first 18–24 days Neurogenesis: begins 5th week, generation of new  neurons Neuronal migration:  4–6 weeks after conception
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 11/17/10 The Fetal Period Begins two months after conception; lasts  about seven months, until birth Largest prenatal size and weight gains
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Unformatted text preview: Fingers, toes, skin, features, lungs, other structures, and reflexes all develop to prepare for birth 11/17/10 Called a fetus from the 8th week until birth By 12th week external genitals well formed, also fingernails, toenails, tooth buds, eyelids During the 3rd month (12-16 weeks) it Fetus Growth and Finishing 11/17/10 Begins sleep-wake pattern Responsiveness, can feel pain after 24 weeks React to sounds Prefer mothers voice Adds fat (5 pounds) Receives antibodies Assumes birth position (head down) Final months 11/17/10 Age at which the fetus can survive outside the mother (38-40 weeks is full term) 5% survive at 22 weeks 50% survive at 26 weeks (6 months) 95% survive at 28 weeks Period of the Fetus -Age of Viability...
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This note was uploaded on 11/16/2010 for the course PSYCHOLOGY 315 taught by Professor Lindasinex during the Fall '10 term at Indiana.

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Week+3+prenatal+2 - Fingers, toes, skin, features, lungs,...

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