Jim and Laurie are expecting their first child. It is approximately fifth week after conception. The organ systems of their baby are differentiating at greatly varying rates. For example, the circulatory system is almost functional. Which stage of prenatal development is their child in?
A) Germinal stage
B) Zygote stage
C) Embryonic stage
D) Fetal stage

Question

Quizplus · Accepted Answer

At approximately five weeks after conception, the baby is in the embryonic stage of prenatal development. During this stage, the major organ systems begin to differentiate and form, with the circulatory system being one of the first to develop. The germinal stage occurs during the first two weeks after conception and involves rapid cell division and the formation of the blastocyst. The zygote stage is the very first stage of prenatal development, when the sperm and egg unite to form a single cell. The fetal stage occurs from the ninth week until birth and is characterized by continued growth and refinement of organ systems.

Jim and Laurie Are Expecting Their First Child