PSYC 1101 Lecture Notes - Lecture 5: Object Permanence, Birth Weight, Intellectual Disability
18 Nov 2016
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Sperm and egg brought together to form a zygote (fertilized cell) Milestone: cells begin to differentiate into specialized locations/structures. Differentiated cells develop into organs and bones beginning of defined (cid:1445)pregnancy(cid:1446), now am embryo. Begins when multicellular cluster implants in the uterine wall . Milestone: 6 months fetus may be able to survive outside the. Point at which survival outside the uterus is possible if brain and respiratory system are developed. 23 weeks 25% of preemies survive, at 24 weeks survival. Teratogen- any disease, drug, or other environmental agent that can harm rate is 55% a developing fetus. Greater and longer exposure more serious damage. Effects depend on quality of pre/postnatal environments. Thalidomide- medicine used to relieve morning sickness. Became clear that there are critical periods for diff. Increased risk of miscarriage, prematurity, growth retardation, small size, cleft lips/palates, cns impairment, respiratory problems. Fetal alcohol syndrome physical symptoms, signs of. Premature detachment of placenta and fetal strokes.
