sikiönkehitys
Sikiönkehitys, also known as fetal development, refers to the process of growth and differentiation that occurs from the time of conception until birth. This complex journey begins with a single fertilized egg, the zygote, which undergoes rapid cell division and specialization.
The earliest stages involve the formation of the blastocyst, a hollow ball of cells that implants in
After approximately eight weeks of gestation, the developing organism is called a fetus. The fetal period is