PSYC 220 Lecture Notes - Lecture 3: Fallopian Tube, Human Chorionic Gonadotropin, Fetal Alcohol Spectrum Disorder

• School: Binghamton University
• Department: Psychology
• Course: PSYC 220
• Professor: Anne Merriwether

Document Summary

3 prenatal development, birth, and the newborn baby. By day 5: multiplies and forms a blastocyst. A structure to feed and protect the baby begins to form: amnion, chorion (tiny hair-like villi), yolk sac (produces blood cells), placenta and umbilical cord. Screens many, but not all, harmful agents -> teratogens. Women don"t know if they"re pregnant in this period, still. Sensitive period: sense of touch begins to develop and the embryo can move. 3 to 4 weeks: primitive brain and spinal cord. Heart, muscles, ribs, backbone and digestive tract begin to develop. 5 to 8 weeks: external features form (face, arms, legs, toes, fingers) and internal organs. Rapid increase in size: nervous system, organs and muscles develop more fully (kidney, pallet, etc) Begins to move more: kicking, thumb sucking, and rehearsal of breathing. External genitals are well-formed and the sex is evident. Fetal movements can now be felt by the mother.