At what stage is a developing human referred to as a fetus?

A developing human is referred to as a fetus starting from approximately 9 weeks after conception until birth. This stage follows the embryonic period, which covers the first 8 weeks post-fertilization when major organs and structures begin to form.

During the fetal stage, the focus shifts to growth and maturation of these structures, leading to significant developments in size, complexity, and functionality. This is when the body systems become more organized and specialized, preparing the fetus for life outside the womb. It is a critical period characterized by continued development of organs established during the embryonic phase and preparation for childbirth.

Understanding the precise timeline of these developmental stages is essential in child development, as it helps in monitoring growth and identifying any potential issues that may arise during pregnancy.