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Accurate depiction of a closed head injury with a front to back whiplash motion. Shows head and brain in normal position with labels for skull, dura, brain, intervertebral discs, spinal cord, brainstem, cerebellum and occipital region. Stages of injury: 1. Head and neck in hyperextension with frontal region impacting the inner surface of the skull; 2. Head and neck in hyperflexion with the occipital region impacting the skull; and 3. Resulting brain damage to the frontal and occipital regions of the brain.