The first image depicts a detailed illustration of the human brain and its surrounding structures. The brain is shown in a cross-sectional view, with the left side of the brain in red and the right side in blue. The brain is connected to the spinal cord, which is also illustrated in a cross-sectional view. The image includes various labels and annotations, such as 'CEREBRAL CORTEX', 'CEREBELLUM', 'CEREBRAL HEMISPHERES', and 'SPINAL CORD', among others. The illustration is monochromatic, with the brain and spinal cord in shades of red and blue, and