Lectures test 3 - DevelopmentPartOne 15:14

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Development Part One 15:14 Developmental Psychology: Universal aspects of lifespan development from  conception through death; Identifies cultural variations Explores physical, cognitive, social and emotional development Physical Deveopment o Cephalocaudal: head to foot  o Proximodistal: center moving outward (middle of the body to outward, also  internal organs, nub for hands, then individual fingers.) Prenatal Development o Germinal Phase (conception-2 weeks) o Zygote: fertilized egg o Placenta: structure that allows oxygen and nutrients to pass into fetus from  mother’s bloodstream allows Embryonic Stage: (2-8 weeks) o Head, face and neck develop o Buds for limbs form and grow  o Major organs/digestive system differentiating o Heartbeat begins Fetal Stage: (8 th  week-birth) o 3 rd  month digestive organs begin to function buds for teeth form sex organs develop rapidly arms/fingers move
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o 4 th  month face looks human lower body outgrows head bones are defined o 5 th  month fingernails and toenails appear Lanugo: fine, wooly hair over body Vernix: waxy coating collects (yellowish/white coating)(helps push baby  out) o 6 th  month: eyebrows/lashes well defined eyes completely formed o 7 th  month:  fetus capable of life outside uterus o 8 th /9 th  month: fat is deposited for later use fingernails beyond fingertips lanugo is shed myelination of brain takes place chief organs increase functioning vernix covers body Teratogens: harmful toxins that affect development resulting in defect, damage or  anomaly
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Important concepts with teratogens o Dose: how much (of a substance)? o Basic Heredity: vulnerable vs. sturdy (some fetuses can handle more  exposure than others) o Multiple Determination: stress, nutrition, lack of medical care o Age of organism at exposure  Teratogenic Agents o Drugs or chemicals Increased understanding of the role of prenatal exposure to drugs on  the developing child:  Thalidomide-for women who have morning sickness, babies were  born with defects.   o Stress: prolonged stress linked with prematurity and low birth weight o Smoking: mild stimulant; increases fetal activity; low birth weight,  increased SIDS (sudden infant death syndrome)  o Marijuana: low birth weight, disturbed sleep in newborns, reduced  attention to environment  o Heroin: premature birth weight, tremulous behavior, poor sleep, poor  sucking and feeding, risk for SIDS o Cocaine: “crack babies” : premature size/weight, tremulous, high pitched  (have addiction), deformities (not as long term as with alcohol)
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This note was uploaded on 02/15/2011 for the course PSYCH 111 taught by Professor Schreier during the Fall '08 term at University of Michigan.

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Lectures test 3 - DevelopmentPartOne 15:14

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