Use the stage number links to images and information about each specific stage of human development over the first 8 weeks. The links below give a broad overview of developmental events during each …

Human embryonic development covers the first eight weeks of development, which have 23 stages, called Carnegie stages. At the beginning of the ninth week, the embryo is termed a fetus (spelled …

There are three stages of fetal development: germinal, embryonic and fetal. Most people don’t talk about their pregnancy in these terms, but it can be helpful to know.

How a human embryo develops into a fetus Learn about human embryonic and fetal development from fertilization to birth. The human body, like that of most animals, develops from a single cell produced …

It can be subdivided into distinct gestational periods. The first 2 weeks of prenatal development are referred to as the pre-embryonic stage. A developing human is referred to as an embryo during …

May 12, 2025 · Human embryonic and fetal development is a fascinating journey that transforms a single cell into a fully formed fetus. This diagram illustrates the key stages from fertilization to 20 …

Key milestones include the first heartbeat at 6 weeks, brain development throughout pregnancy, and achieving viability around 24 weeks. Your maternal health, nutrition, and genetics all play crucial …