During which period of prenatal development do most of the body's structures and organ systems form?
A)Period of the fetus
B)Period of the zygote
C)Period of the embryo
D)Period of 4 weeks prior to full term

Question

Quizplus · Accepted Answer

During the period of the embryo (first 8 weeks of prenatal development), the majority of the body's structures and organ systems form. The period of the zygote is the first 2 weeks and mainly involves cell division and implantation, while the period of the fetus is from the 9th week until birth and involves further growth and development of organs and systems already formed. The period of 4 weeks prior to full term is not a recognized period of prenatal development.

During Which Period of Prenatal Development Do Most of the Body's