The video features a 3D model of a human head and neck. The model is transparent, allowing the viewer to see through it and observe the internal structures. The brain is prominently displayed in the center of the head, with its intricate folds and grooves visible. The model also shows the spinal cord extending down the neck, with the vertebrae clearly outlined. The video rotates the model to provide a 360-degree view, allowing the viewer to see the brain and spinal cord from multiple angles. The colors used in the model are natural and realistic, with the brain appearing in shades of pink and grey, and the spinal cord in a darker hue.