PSY 150 Lecture Notes - Lecture 6: Psych, Cervical Cancer, Thalidomide
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Fetal stages: zygote, morula, blastocyst, embryo, fetus. It takes 18 days to form the spinal cord. It takes 3 days later for the brain and organs to develop. It takes 24 days to form the eyes, ears and heart. It takes 35 days for spaces between fingers, wrists, and ends of feet to occur. It takes 40 days for the heart to start beating and for the face to start rotating. It takes 48 days for the toes to become more defined and for the face to start connecting. It takes about 63 days for the body to get longer& genital development depends on the testosterone and estrogen levels. The fetus must be born after 22 weeks for it to survive. Teratogens things that cause fetal damage when exposed to mothers: Smoking/nicotine low birth weight, prematurity; miscarriage, lung problems. ~klein felter"s syndrome xxy (most likely to get testicular cancer & removed at birth).
