Exam 4: Seciton 1: Beginnings: Parental Development and Birth
Define behavioral teratogens and name at least two common ones. State two potential consequences of exposure to them.
Behavioral teratogens are substances and conditions that do not cause physical defects in a developing fetus but increase the risk of harm to the child's brain. For example, if a pregnant mother 1) smokes, 2) drinks alcohol, 3) uses marijuana or other drugs, or 4) has a virus (such as the flu), the fetus's brain could be damaged. Consequences of exposure to behavioral teratogens include 1) hyperactivity, 2) learning disabilities, 3) poor concentration, 4) slow learning, 5) impaired spatial reasoning, and 6) antisocial behavior.
Define couvade and give two examples.
In some cases, expectant fathers have biological experiences related to pregnancy and birth; this is called couvade. For example, 1) levels of the stress hormone cortisol correlate between expectant fathers and mothers, probably because the partners influence each other's anxiety and relaxation. Many fathers experience symptoms of pregnancy including 2) weight gain,3) indigestion, and 4) pain during the mother's labor.
Define reflexes. Describe the three kinds of reflexes that are necessary for newborn survival and give an example of each.
Reflexes are unlearned actions that are involuntary responses to particular stimuli. Those that are necessary for newborn survival are ones that 1) maintain oxygen supply (breathing, hiccupping, sneezing), 2) maintain constant body temperature (crying, shivering, kicking off blankets), and 3) encourage feeding (sucking and rooting).
Explain the procedure known as a cesarean section, and discuss at least two benefits and two risks associated with this kind of delivery.
Give a general description of the embryonic period. Detail the fetal status at the end of this period.
Describe the maternal symptoms of postpartum depression. What are two possible outcomes of postpartum depression for the baby?
Identify at least three teratogens. Since teratogens' impact depends on multiple factors, briefly describe two such factors.
List two of the hypotheses developed to explain the increase in low birthweight in the United States.
Describe the germinal period, embryonic period, and fetal period of prenatal development. Identify the length of each period and detail the major developmental milestones that occur during each period.
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