When does an embryo become a fetus? This is an important milestone in the development of a baby during pregnancy. At the end of the 10th week, the embryo transitions into the fetal stage. This transition marks a significant step in the growth and development of the baby, as it signifies the completion of the embryonic period and the beginning of the fetal period.
During the first few weeks of pregnancy, the fertilized egg undergoes rapid cell division and implants itself into the uterine lining. This marks the start of pregnancy, and the embryo begins to develop. By the end of the 10th week, the embryo has grown in size and complexity, and most of the major organs and body systems have started to form.
At this point, the embryo is approximately 1.2 inches long and weighs around 0.14 ounces. It may resemble a tiny human with limb buds, a head, and a rudimentary face. The heart has formed and is beating, and the circulatory system is beginning to develop. The brain is also rapidly developing, and the neural tube, which will later form the spinal cord, is now closed.
The transition from embryo to fetus is primarily a matter of semantics and does not signify any significant change in the baby’s development. It is more of a classification change that reflects the stage of development. The term “fetus” is used from this point forward until birth.
During the fetal stage, the baby continues to grow and refine its organ systems. The limbs continue to develop and become more defined, with fingers and toes forming. The facial features become more distinct, and the eyes, ears, and nose take shape. The reproductive organs also begin to develop.
The fetus is surrounded by amniotic fluid, which helps protect and cushion it as it grows. The umbilical cord connects the fetus to the placenta, which provides oxygen and nutrients, as well as removes waste products.
It is important to note that every pregnancy is unique, and the exact timing of the transition from embryo to fetus may vary slightly. It is also worth mentioning that the development of the baby during pregnancy is a continuous and complex process that unfolds over the course of nine months.
The transition from embryo to fetus occurs at the end of the 10th week of pregnancy. This marks an important milestone in the development of the baby, as it signifies the completion of the embryonic period and the beginning of the fetal period. During this stage, the baby continues to grow and refine its organ systems until birth.