Embryonalaufbau
Embryonalaufbau refers to the structural organization and differentiation of an embryo during its early stages of development. This process begins with fertilization, where a sperm fuses with an egg to form a zygote. The zygote then undergoes rapid cell division, a process known as cleavage, resulting in a multicellular structure called a blastocyst.
The blastocyst is characterized by an inner cell mass, which will give rise to the embryo proper,
The ectoderm forms the outer covering of the body, including the skin, hair, and nervous system. The