What is embryology?Well, embryos are the little pre-fetus things that grow inside the mom after conception. Wow that was so sophisticated. So embryology is the study of the pre-fetus things! Embryology focuses on the development after fertilization. Turns out, a lot of the embryos look very similar during early stages.
In embryonic development, there are three germ layers: endoderm, mesoderm, and ectoderm.
The endoderm is the innermost layer and consists of flattened cells and develops the digestive organs such as the stomach, liver, and intestines, and the lungs.
Mesoderm is the middle layer and it develops the muscles, blood system, and skeleton. The layer is formed through a process called gastrulation in the third week of embryonic development.
The exterior layer is called ectoderm and it helps form the nervous system, meaning the spine, brain, and peripheral nerves. It also forms the lining of the mouth, nostrils, anus, sweat glands, hair, and nails.
*Fun fact: ectoderm means "outside skin" in Greek. Those smarty pants!*
DNA control plays a huge role in embryonic development. The DNA control regulates and shows how the the genes operate together.
When everything goes right, you end up with a tiny living thing!
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