Developmental Psychology: Prenatal development and birth · Stages of Prenatal Development
How a single fertilized cell becomes a newborn: the germinal, embryonic and fetal periods and what develops in each.
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1. What is the correct order of the three periods of prenatal development?
- Germinal, fetal, embryonic
- Embryonic, germinal, fetal
- Germinal, embryonic, fetal
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Answer: Germinal, embryonic, fetal
The germinal period covers the first two weeks after conception, the embryonic period runs to about week 8, and the fetal period lasts until birth.
2. Where does fertilization usually take place?
- In the ovary
- In the fallopian tube
- In the uterus
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Answer: In the fallopian tube
The egg is usually fertilized in the fallopian tube, and the zygote then spends several days dividing as it travels toward the uterus.
3. The germinal period ends with which key event, about two weeks after conception?
- Implantation in the uterine wall
- Closure of the neural tube
- The first heartbeat
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Answer: Implantation in the uterine wall
The germinal period ends once the blastocyst is firmly embedded in the uterine lining, linking the developing organism to the mother's blood supply.
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