This stage of your little one is especially exciting must follow the pregnancy week by week, because his heart has independently developed and may soon begin to beat. Important members such as blood vessels, the spine, the digestive and brain are also now being developed, spine, digestive system and brain.
This is a very important moment for your child. In the fifth week the embryo has developed between 0.5 to 1 millimeter in a small oval plate. Now it seems rather like a small flying saucer from another world. It consists of three embryonic germ layers or (ectoderm, mesoderm, endoderm), from which the various organs develop.
The external germinal layer cells to form the developing nervous system, sensory system and skin. The mesoderm (embryonic layer media) develops the heart, vascular system and connective tissue (CT). Endoderm layer (innermost embryonic tissue) develop internal organs as the intestines, lungs and reproductive system. In the middle of the inside of the embryo, there is a slight thickening, a neuronal line that later will develop your child’s nervous system.