PSYA02H3 Chapter Notes - Chapter 11: Fetal Alcohol Spectrum Disorder, Prenatal Development, Primitive Reflexes
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PSYA02H3 Full Course Notes
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From birth to infancy from childhood to adolescence from young adulthood to old age, one of the most obvious facts about humans we change over time. Includes dramatic transformations and striking consistencies in the way we look think feel and act. Developmental psychology: study of the continuity and change across the life span. Prenatal stage ends with birth, begins 9 months earlier about 200 million sperm begin journey to women"s vagina, through uterus and to fallopian tubes. Those that manage to make their way through the uterus, a mere 200 find correct tube and get close enough to egg to release digestive enzymes that erode the egg"s protective layer. One sperm sheds its tail and fertilizes the egg and in 12 hours, nuclei of the sperm and the egg merge and prenatal development of a unique human being begins. Zygote: a fertilized egg that contains chromosomes from both a sperm and an egg.
