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The key concepts and exam questions related to conception and prenatal development, as part of the foundations of maternal-newborn & women's health nursing, 7th edition. It provides an in-depth understanding of the various stages of fetal development, including the formation of the placenta, the role of amniotic fluid, and the changes that occur during the fetal period. The document also covers topics such as twin pregnancy, maternal hormones, and fetal circulation. This comprehensive resource would be valuable for nursing students preparing for exams or seeking to deepen their knowledge in the field of maternal-newborn health.
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DIF: Cognitive Level: Understanding OBJ: Nursing Process Step: Assessment MSC: Patient Needs: Health Promotion and Maintenance
placenta is formed from two layers of cells—the trophoblast, which is the other portion of the fertilized ovum, and the decidua, which is the portion of the uterus where implantation occurs. The flattened, disk-shaped layer of cells is the embryonic disk; it will develop into the body. DIF: Cognitive Level: Understanding OBJ: Nursing Process Step: Implementation MSC: Patient Needs: Health Promotion and Maintenance
umbilical cord is much larger at this time than it will be at the end of pregnancy. - correct answer ☑☑ ANS: C The abdominal contents grow more rapidly than the abdominal cavity, so part of their development takes place in the umbilical cord. By 10 weeks, the abdomen is large enough to contain them. The intestines remain within the umbilical cord only until about week 10. Blood supply is adequate in all areas; intestines stay in the umbilical cord for about 10 weeks because they are growing faster than the abdomen. Intestines begin their development within the umbilical cord, but only because the liver and kidneys occupy most of the abdominal cavity, not because of the size of the umbilical cord. DIF: Cognitive Level: Understanding OBJ: Nursing Process Step: Assessment MSC: Patient Needs: Health Promotion and Maintenance
"The baby is moving, but you can't feel it yet." c. "Some babies are quiet and you don't feel them move." d. "Within the next month you should start to feel fluttering sensations." - correct answer ☑☑ ANS: D Maternal perception of fetal movement (quickening) usually begins between 17 and 20 weeks after conception. Because this is her first pregnancy, movement is felt toward the later part of the 17 to 20 weeks. "The baby is moving, but you can't feel it yet" may be alarming to the woman. "Some babies are quiet and you don't feel them move" is a true statement; the fetus' movements are not strong enough to be felt until 17 to 20 weeks; however, this statement does not answer the woman's concern. Fetal movement should be felt between 17 and 20 weeks; if movement is not perceptible by the end of that time, further assessment will be necessary. DIF: Cognitive Level: Application OBJ: Nursing Process Step: Implementation MSC: Patient Needs: Health Promotion and Maintenance
MSC: Patient Needs: Health Promotion and Maintenance
membrane that surrounds the fetus. It is not involved in the oxygen and nutrient exchange. DIF: Cognitive Level: Application OBJ: Nursing Process Step: Implementation MSC: Patient Needs: Health Promotion and Maintenance
c. Dizygotic twins arise from two fertilized ova and may be the same sex or different sexes. d. Dizygotic twins arise from a single fertilized ovum and may be the same sex or different sexes. - correct answer ☑☑ ANS: C Dizygotic twins arise from two ova that are fertilized by different sperm. They may be the same or different gender, and they may not have similar physical traits. Monozygotic twins are always the same sex. A single fertilized ovum that produces twins is called monozygotic. Dizygotic twins are from two fertilized ova and may or may not be the same sex. DIF: Cognitive Level: Application OBJ: Nursing Process Step: Implementation MSC: Patient Needs: Health Promotion and Maintenance
b. Maternal blood type O-negative, Rh-negative, and infant blood type O-negative, Rh-negative c. Passive immunity d. Rh-negative mother and Rh-positive baby - correct answer ☑☑ ANS: C Passive immunity provides temporary protection to the baby based on the transfer of maternal antibodies. Maternal hormones would not lead to a clinical diagnosis of fetal anemia. These blood types and Rh factors are the same; therefore, no antibodies will be created. In this situation, an Rh-negative mother and Rh-positive baby will result in stimulation of antibodies that will stimulate a reaction leading to hemolysis. DIF: Cognitive Level: Analysis OBJ: Nursing Process Step: Assessment MSC: Patient Needs: Physiologic Integrity/Reduction of Risk Potential
DIF: Cognitive Level: Application OBJ: Nursing Process Step: Assessment MSC: Patient Needs: Health Promotion and Maintenance
Brown fat e. Eyebrows or head hair - correct answer ☑☑ ANS: A, B Both vernix caseosa and lanugo decrease as the fetus reaches term. Port wine stain is a birthmark and, if present, will be exhibited at or shortly after birth. Brown fat in the fetus will be maintained in order to maintain core temperature. Eyebrows and head hair increase as the fetus nears term. DIF: Cognitive Level: Application OBJ: Nursing Process Step: Assessment MSC: Patient Needs: Health Promotion and Maintenance: Techniques of Physical Assessment
c. Progesterone d. Testosterone e. Human chorionic gonadotropin (hCG) - correct answer ☑☑ ANS: B, C, E HCG causes the corpus luteum to persist and produce the necessary estrogens and progesterone for the first 6 to 8 weeks. Estrogens cause enlargement of the woman's uterus and breasts and growth of the ductal system in the breasts and, as term approaches, plays a role in the initiation of labor. Progesterone causes the endometrium to change, providing early nourishment. Progesterone also protects against spontaneous abortion by suppressing maternal reactions to fetal antigens and reduces unnecessary uterine contractions. Other hormones produced by the placenta include hCT, hCA, and a number of growth factors. Insulin and testosterone are not secreted by the placenta. DIF: Cognitive Level: Understanding OBJ: Nursing Process Step: Assessment MSC: Patient Needs: Health Promotion and Maintenance