Exam 4: Prenatal Development

Catherine and Henry grow most of their own vegetables without the use of pesticides,and they raise and butcher their own free-range,organic meat and poultry.Catherine has just become pregnant.Henry is concerned because in their community family pets are allowed to roam freely.Based on current research,is Henry's concern warranted?

By four days after conception,approximately how many cells does the zygote contain?

Which disease can be contracted from cat feces?

What congenital abnormalities are associated with prenatal exposure to toxoplasmosis?

Alcoholic beverages now carry a government warning that states,"Women should not drink alcoholic beverages during pregnancy because of the risk of birth defects." What types of defects have been associated with heavy alcohol consumption during pregnancy? What types of defects have been associated with social drinking during pregnancy?

If a baby were born at 20 weeks,what would be the prognosis for survival?

Maria and Sue are best friends,and so when Maria contracts rubella,Sue catches it from her.At the time they are sick with the disease Maria is 6 weeks pregnant and Sue is 7 months pregnant.What is the most likely outcome in this situation?

Maternal malnutrition can disrupt prenatal development.What is the likely developmental outcome if the mother is malnourished during the first trimester? What is the likely developmental outcome if the mother is malnourished during the third trimester?

What parts of the body does the ectoderm give rise to?

What is the term for the white,cheesy substance that appears during the fetal period?

Which statement best describes the fertilized ovum at the time of implantation?

What effect does prenatal malnutrition have on the developing child?

When does the period of the zygote take place during prenatal development?

Should mothers take drugs and medications during pregnancy? Why or why not? What accounts for the fact that not every embryo or fetus exposed to a potential teratogenic agent is adversely affected or experiences the same effects?

When Morgan discovered that she was pregnant,she tried hard to take special care of herself to ensure that she and her new baby would be healthy.She started taking megadoses of vitamin supplements to ensure that both she and the baby had ideal nutrition.Is Morgan doing the right thing?

What parts of the body does the endoderm give rise to?

Janice had an ultrasound done about 60 days after she conceived her baby.What information about her baby could Janice learn from the ultrasound at this point in pregnancy?

Research suggests that infants of mothers who were anxious and distressed during pregnancy are more likely to be difficult to care for.What is the suspected cause of this outcome?

At what point during pregnancy is the age of viability reached?

What is a teratogen?