Human Growth and Development

Prenatal Development-Embryonic Period

How many distinct stages of development are part of the prenatal period?

The prenatal period of development consists of two distinct stages of development: embryological development and fetal development. Embryological development begins with fertilization and continues until the end of the eighth week of development. Fetal development begins at the ninth week of development and continues until birth.


This is a web preview of the "The Handy Anatomy Answer Book" app. Many features only work on your mobile device. If you like what you see, we hope you will consider buying. Get the App