Early Training: Your Baby in the Fourth Week of Pregnancy
- Baby size 0.1 cm
- About the size of a poppy seed
In the fourth week of pregnancy, the embryo has already grown significantly and begins to take shape. Initial structures such as the neural tube, which will later become the brain and spinal cord, begin to form. The first signs of the heart and blood vessels also develop, marking the beginning of the circulatory system. This is a crucial time of development and growth, where each cell is playing a vital role in the formation of the future baby.