Learn the definition of what is the embryonic stage. Understand what is embryonic development and what happens during the embryonic period.

Learn about the stages of embryonic development. Discover the embryology definition, the embryological development definition, and human embryo stages.

Learn about the stages of prenatal development. Discover the order of the stages and the events of the germinal stage, embryonic stage, and fetal stage.

This lesson discusses the four major types of tissues: epithelium, connective tissue, muscle, and nervous tissue, and their embryological origins and functions.

During the embryonic period, an organized ball of cells with three germ layers, called the gastrula, develops. The middle germ layer is the mesoderm, which later differentiates into various ...

The placenta provides nutrients to the fetus. So, you may remember that the placenta is the composite structure of embryonic and maternal tissues that supplies nutrients to the developing embryo.

Understand what stem cells are and explore their features. Learn about embryonic stem cells, adult stem cells, totipotent, pluripotent, and multipotent stem cells.

Learn about the early stages of human embryonic development. Identify the stages in order, and study the significance of early embryonic development in mammals.

The definition of organogenesis is the process by which an integrated mass of embryonic cells differentiates into organs and specialized tissues of the fetus. The undifferentiated cells in the ...

Animal Embryonic Development Stages There are many stages undergone by the zygote as it develops into an embryo, and then into a fetus after it is initially fertilized.