What is the Difference Between Embryo and Fetus?

The difference between an embryo and a fetus lies in the stages of human development and the time frames associated with each stage.

• Embryo: An embryo represents the early stage of human development, roughly corresponding to the 5th-10th weeks of pregnancy. During the embryonic period, cells begin to take on different functions, and vital body structures and organs start to form. The embryonic stage is crucial for the formation of important systems of the body, serving as the basic foundation and framework for the developing baby.
• Fetus: After the embryonic period has ended at the end of the 10th week of pregnancy, the embryo is now considered a fetus. A fetus is a developing baby beginning in the 11th week of pregnancy. During the fetal period, the focus shifts from formation to growth and development, preparing the baby for life outside the womb. The fetal stage lasts until the end of the pregnancy.

In summary, the main differences between an embryo and a fetus are the stages of development they represent and the key processes that occur during each stage. The embryonic stage focuses on the formation of vital body structures and organs, while the fetal stage centers on growth and development to prepare the baby for life outside the womb.

Comparative Table: Embryo vs Fetus

Here is a table comparing the differences between an embryo and a fetus:

The distinction between an embryo and a fetus is made based on gestational age. An embryo is the early stage of human development in which organs and critical body structures are formed, while a fetus is a developing baby that grows rapidly during the fetal period. The transition from embryo to fetus occurs at the end of the 10th week of pregnancy.