Exam 4: Prenatal Development

Beth has just had an ultrasound and is devastated to learn that although the placental membranes have grown,the embryonic disk has not.Given what you know about the survival rate of zygotes,should Beth be surprised?

Describe the effects of prenatal exposure to rubella.

How do the trimesters of a pregnancy relate to the stages of the development of the new child?

Which of the following is more dangerous to the developing child during the fetal period or at birth,rather than during the embryonic period?

Jennifer is pregnant and tells her husband that she has felt the baby kick for the first time.Based on this information,which trimester of pregnancy is Jennifer in?

What are the typical characteristics of babies born with fetal alcohol syndrome?

Describe fetal development during the second and third trimesters and explain what is meant by the term age of viability.

Syphilis,genital herpes,and AIDS are diseases that can profoundly affect the developing child.Briefly discuss each,noting when the child typically comes in contact with each and what the major effects are.

According to the authors of the textbook,what was one of the lessons of the thalidomide tragedy?

During the embryonic period the genital ridge begins to differentiate into the male testes or the female ovaries.What does this differentiation require?

A number of studies have investigated the link between a mother's emotional state during her pregnancy and the risk to her developing baby.In general,what seems to be the consensus regarding this link?

Grace is a heavy drinker who has just discovered that she is pregnant.What is good advice for Grace regarding her drinking and the health of her unborn child?

Describe the process of sexual development that occurs during the prenatal period.

Which milestone is reached by the developing fetus between 22 and 28 weeks post-conception?

List and describe the three periods of prenatal development,noting the event that marks the beginning of each period.

What event marks the end of the period of the zygote?

When Florence was pregnant,her doctor advised her that moderate drinking was okay but to avoid heavy drinking or bingeing.According to current research is her doctor's advice valid?

What is the embryonic period in a pregnancy?

The embryonic disk differentiates into three layers.Name each of these layers and state what each layer will eventually become.

Cynthia,who has active genital herpes,delivered her baby by cesarean section.Why was this form of delivery used?