The correct order of the three stages of human prenatal development are
A) differentiation, implantation, and strengthening.
B) embryo, zygote, and fetus.
C) placental, umbilical, and embryonic.
D) embryonic, placental, and umbilical.
E) germinal, embryonic, fetal.

Question

Quizplus · Accepted Answer

The three stages of human prenatal development are germinal (conception to 2 weeks), embryonic (2 weeks to 8 weeks), and fetal (8 weeks to birth). Choice A is incorrect because differentiation and strengthening are not stages of prenatal development. Choice B is incorrect because the zygote is the initial stage of development before it becomes an embryo. Choice C and D are incorrect because placental and umbilical are not stages of prenatal development, but rather parts of the umbilical cord that provide nutrients and oxygen to the developing fetus.

The Correct Order of the Three Stages of Human Prenatal