cde class 1

cde class 1 - of the mothers uterus Teratogens-monster...

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Cde 232 Jan 28, 2008 Prenatal development and Birth Gestation 3 trimesters 3 developmental periods o Germinal Blastocyst Trophoblast Layer of cells that provide nutrients to the inner cell mass later becomes placenta Implantation After about 10 days, the cells implants into the wall of the uterus Changes hormones, pregnancy is possible o Embryonic Most rapid prenatal changes take place here Embryo Differentiation- begins when cells start to take on specific characteristics so that they can carry in normal human functions Neural tube-beginning of central nervous system Organogenesis- organs begin to form, vital organs- heart, lungs, digestive system Growth Cephalo-caudal o Head to tail- getting longer Proximo-distal o Center outward. Getting bigger. o Fetal Ninth week Indifferent gonad- at about 6 weeks, cluster of cells- gland that either becomes male or female reproductive organs Age of viability-about 24 weeks A time in which infants can suck and breath outside
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Unformatted text preview: of the mothers uterus Teratogens-monster forming- any agent that contribute to birth defects Dose amount of exposure time of exposure critical period-time when fetus or embryo are more vulnerable to affects of a teratogen genetic susceptibility o boys are more vulnerable because they only have one X o females have two xs- boys no backup protective steps o no alcohol, smoke, easy pollution. Specific teratogens Drugs Thalidomine Alcochol Fetal alcohol syndrome Fetal alcohol effects Occurs with smaller amounts of alcohol Tobacoo Rubella Hiv/aids- 25% of kids contract during pregnancy or breast feeding Birth Apgar scale Take one minute after birth and then five minutes after birth Assesses heart rate, muscle tone, breathing, color and reflexes A- appearance- pink and brown are good, blue is bad P- Pulse G-grimace looks at refelex A- activity- muscle tone R- respiration- breathing and a loud initial cry is good...
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This note was uploaded on 04/03/2008 for the course CDE 232 taught by Professor Gingerburell during the Spring '08 term at ASU.

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cde class 1 - of the mothers uterus Teratogens-monster...

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