Understanding Prenatal Development

During prenatal development, a significant process occurs as the embryo transitions into a fetus. This period is crucial for the development of essential organs and structures. The stage of development at which the developing human is most vulnerable to environmental influences, such as teratogens, is particularly important to understand.

What is the term for the stage of development that occurs between the 2nd and 8th week after conception, during which the foundations for major body systems are formed?