PSY100Y5 Lecture : Chapter 11-Human Development
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PSY100Y5 Full Course Notes
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The germinal stage: it is the first phase of prenatal development, encompassing the first two weeks after conception. Zygote becomes a mass of cells that implants in the uterine wall and placental begins to form. The embryonic stage: it is the second stage or prenatal development, last from two weeks until the end of the second month. Vital organs and bodily systems begin to form (embryo), and spine, heart, and brain emerge, making it a great period of vulnerability. The fetal stage: it is the third stage of prenatal development, lasting from two months through birth. Rapid body growth, and bones and muscles begin to form, becomes a fetus and physical movements occur, skeletal bones harden, and sex organs develop. Maternal consumptions of alcohol, tobacco, and other drugs can have a variety of negative effects on prenatal development. Many problems can be avoided if expectant mothers have access to good health care.
