sikiökaudelta
Sikiökausi, also known as the fetal stage, refers to the period of development in mammals following the embryonic stage. In humans, this stage begins around the ninth week of gestation and continues until birth. During the sikiökausi, the developing organism, now called a fetus, undergoes significant growth and maturation of its organs and systems.
Key developments during the sikiökausi include the formation of all major body parts, such as fingers, toes,
The sikiökausi is characterized by rapid growth in size and weight. External genitalia become distinguishable, and