Exam 28: Pregnancy and Human Development

What destroys the zona pellucida sperm-binding receptors?

Match the following: -Leads to the formation of the first cell of the new individual.

Figure 28.1 Using Figure 28.1, match the following: -Esophagus.

As pregnancy continues,the increasing bulkiness of the anterior abdomen changes the woman's center of gravity,possibly causing an accentuated lumbar curvature called ________.

At what time in the pregnancy is the placenta fully prepared to fulfill the needs of the developing fetus?

The period from fertilization through week eight is called the embryonic period.

Thalidomide was once used to treat intense nausea and morning sickness in pregnant women.Unfortunately,if administered at certain points during gestation it resulted in limb malformation.This drug is an example of a(n)________.

Match the following: -Becomes the embryonic disc.

Human placental lactogen initiates labor.

Figure 28.1 Using Figure 28.1, match the following: -Trachea.

Describe the events allowing monospermy.

Match the following: -Leads to the establishment of the three primary germ layers.

A 19-year-old,single,sexually active college student,who has not used birth control on a regular basis,is in her first trimester of pregnancy.She is at the OB/GYN clinic for her first prenatal visit.In assessing her nutrition,the nurse discovers that the patient drinks heavily on a regular basis.She also states she does not like milk.What information should the nurse give the patient regarding nutrition?

Figure 28.1 Using Figure 28.1, match the following: -Liver.

Cleavage as part of embryonic development is distinctive because it involves ________.

The "fluid-filled,hollow ball of cells" stage of development is the blastocyst.

Figure 28.2 Using Figure 28.2, match the following: -Protective water-filled sac surrounding the embryo.

An episiotomy is an incision made to widen the vaginal orifice,aiding fetal expulsion.

Match the following: -Embedding of the blastocyst in the uterine wall.

Shortly after implantation ________.