Embryo 40 Day Old Brain and Spinal Cord
Computer Generated Image from Micro-MRI, actual size of embryo = 8.0 mm - This image provides a frontal perspective from the right side of the developing embryo during the sixth week of embryonic development. This age is calculated from the day of fertilization. The image has been manipulated so that the concentration is focused on the major structures of the central nervous system, the brain and the spinal cord. The brain and spinal cord are highlighted dark orange. The image of the brain indicates the beginnings of differentiation in this region. The three major components are the forebrain, midbrain, and hindbrain. The central nervous system was one of the first organ systems to develop and it continues to grow.