How does the nurse describe the preembryonic period of development to a pregnant client?

• A. The last trimester of pregnancy.
• B. The time from conception to the end of the first month.
• C. The first 2 weeks of fetal development after conception.
• D. The period of organ development during pregnancy.

Answer: (C)

The preembryonic period of development is characterized specifically as the time from fertilization to the completion of the second week of gestation. During this period, significant processes such as the formation of the zygote, cleavage, and implantation occur. This early stage lays the groundwork for the subsequent embryonic and fetal stages of development.

Choosing the option that identifies this period as the first 2 weeks of fetal development after conception accurately describes the initial phase of pregnancy where rapid cell division and early development take place, leading up to implantation in the uterine wall. This is crucial as it sets the stage for further growth and development in later stages.

The other options describe different phases in pregnancy. The last trimester refers to the final three months, which is well beyond the preembryonic phase. The time from conception to the end of the first month extends into the embryonic period, while the period of organ development pertains to later stages when major organs start to develop, not the initial preembryonic phase.