Past gastrulation, an embryo continues to develop into a mature multicellular organism by forming structures necessary for life outside of the womb or egg. As the name suggests, organogenesis is the stage of embryonic development when organs form.
From beginning as a one-cell structure to your birth, your prenatal development occurred in an orderly and delicate sequence. There are three stages of prenatal development: germinal, embryonic, and fetal. Keep in mind that this is different than the three trimesters of pregnancy.
Embryonic development is a complex biological process that begins with the fertilization of an egg cell, or ovum, forming a single-celled zygote. This zygote undergoes a series of rapid cell divisions known as cleavage, resulting in a multicellular structure called the morula...
