Question 1

Which hormone is primarily responsible for triggering ovulation during the menstrual cycle?

Accepted Answer

Luteinizing hormone (LH)

Question 2

A couple is struggling with infertility due to blocked fallopian tubes. Which assisted reproductive technology (ART) is most likely to be recommended?

Accepted Answer

In vitro fertilization (IVF)

Question 3

According to the study materials, what is the approximate duration of a typical human pregnancy from conception to birth?

Accepted Answer

$$266$$ days

Question 4

During which period of prenatal development does the blastocyst implant into the uterine wall?

Accepted Answer

The germinal period

Question 5

A woman is undergoing IVF and is over 40 years old. According to the data, what is the approximate percentage chance of a live birth using her own fresh embryos?

Accepted Answer

$$4\%$$

Question 6

Which of the following best describes the process of gastrulation during the embryonic period?

Accepted Answer

The differentiation of three germ layers that form all body tissues

Question 7

Spina bifida is a neural tube defect that occurs when:

Accepted Answer

The neural tube fails to close at the bottom

Question 8

Which of the following is a critical nutrient for preventing neural tube defects during early pregnancy?

Accepted Answer

Folic acid

Question 9

A couple is considering using donor embryos for IVF. According to the data, what is the approximate chance of a live birth at any age using donor embryos (fresh or frozen)?

Accepted Answer

$$46\%$$

Question 10

Which of the following statements about miscarriage is supported by the study materials?

Accepted Answer

The likelihood of miscarriage increases with maternal age.

Question 11

During the embryonic period, which structure forms first and is essential for the development of the central nervous system?

Accepted Answer

The neural tube

Question 12

Which of the following best explains why ART success rates decline with increasing maternal age?

Accepted Answer

Older women have fewer eggs and lower egg quality

Question 13

A researcher is studying the effects of maternal nutrition on prenatal development. Which period is most sensitive to nutritional deficiencies?

Accepted Answer

The embryonic period

Question 14

Which of the following is a function of the placenta during prenatal development?

Accepted Answer

It transfers oxygen and nutrients from mother to embryo

Question 15

If a woman’s embryo fails to implant during the germinal period, what is the most likely outcome?

Accepted Answer

A miscarriage occurs, often before the woman knows she is pregnant

Question 16

Which of the following best describes the role of mitochondria in selecting eggs for IVF procedures?

Accepted Answer

Eggs with higher mitochondrial energy levels are preferred for increased success rates

Question 17

A woman is 35 years old and uses her own fresh embryos for IVF. What is her approximate chance of a live birth at term?

Accepted Answer

$$17\%$$

Question 18

Which of the following is a correct sequence of prenatal development periods?

Accepted Answer

Germinal period, embryonic period, fetal period

Question 19

A couple is considering ART and wants to maximize their chances of success. Which factor should they consider most important based on the study materials?

Accepted Answer

The age of the woman providing the eggs

Question 20

Which of the following statements about prenatal loss is accurate according to the study materials?

Accepted Answer

Many losses occur before a woman even knows she is pregnant

ch. 3

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