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LESSON 2
EMBRYOLOGY AND FETAL DEVELOPMENT 2-1. INTRODUCTION Pregnancy is a sequence of events that normally includes fertilization, implantation, embryonic growth, and fetal growth that terminates in birth (see figure 2-1). Even though there are many events that take place in the reproductive cycle, we cannot include every detail in this lesson. However, the following information will give descriptive events of what goes on in the uterus prior to birth. This information will also help you to recognize potential problems and to be able to intervene in the nursing care process. | 
Figure 2-1. Growth of the fetus. LESSON OBJECTIVES
After completing this lesson, you should be able to: - 2-1. Identify terms and definitions that are related to embryology and fetal development.
- 2-2. Identify the principles of fertilization.
- 2-3. Identify statements referring to the process of implantation.
- 2-4. Select statements concerning sex determination.
- 2-5. Select descriptive statements referring to placenta development.
- 2-6. Identify the functions of the placenta.
- 2-7. Identify statements referring to fetal membranes.
- 2-8. Identify fetal development at the end of each trimester.
- 2-9. Identify the normal duration of a pregnancy.
- 2-10. Select statements giving information about what is obtained by an amniocentesis.
- 2-11. Identify risks of an amniocentesis.
- 2-12. Identify components of fetal circulation.
- 2-13. Identify changes in fetal circulation after birth.
- 2-14. Select six diseases from which the fetus received temporary protection.
- 2-15. Identify identical and fraternal twins.
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