PSY 302 Chapter Notes - Chapter 2 Pt. 1: Circadian Rhythm, Prenatal Development, Miscarriage
Document Summary
* aristotle rejected the idea of preformation in favor of epigenesis, or the emergence of new structures and functions during development, which he solved by opening up a chicken egg and studying the chick. * sperm failure is due to tangling of sperm, going into a fallopian tube that doesn"t harbor an egg, genetic defects, etc. * behavioral cycles: rest-activity cycles (lots of movement to none) begins at 10 weeks, circadian rhythms are developed where the baby is calm in the morning and more active at night. * sight and touch: fetus" have been observed grasping umbilical cords, rubbing face and sucking thumb. * taste: fetus can detect certain flavors and likes some better than others; fetus has a sweet tooth. * smell: amniotic fluid takes on odors from what the mother has eaten and comes into contact with the fetus" odor receptors. * hearing: fetus responds to sounds from the 6th month of pregnancy on, external sounds are audible.
