It is characterised by the processes of cell division and cellular differentiation of the embryo that occurs during the early stages of development. In biological terms, the development of the …

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 …

May 12, 2025 · This diagram of human embryonic and fetal development offers a detailed look at the stages from fertilization to 20 weeks. It serves as a valuable tool for understanding …

Clicking the Carnegie stage numbers opens a page dedicated to describing that single stage and the associated developmental events. This page shows some key events of human …

Mar 19, 2024 · 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.

Apr 10, 2025 · Follow your baby's development week by week, from conception to labor, in these amazingly detailed, doctor-reviewed images. At the start of this week, you ovulate. Your egg is …

In this section, learn more about the Embryology and the development of all the major systems.

Prenatal development is divided into three stages: the germinal period, the embryonic period, and the fetal period. These stages vary in terms of length and developmental outcomes.

But, embryo development is an intricate process, and there are still many mysteries around how the steps of that process work. Many scientists continue to study embryos, and we are …

Embryonic development is a complex biological process that begins with the fertilization of an egg cell, or ovum, forming a single-celled zygote.