Identify the following regions of the normal brain in the image above: Anterior cerebral artery - Aqueduct of Sylvius - Foramen of Monro - Fourth ventricle - Mammillary body - Optic chiasm - Pineal gland - Posterior commissure - Septum pellucidum - Tectum of midbrain - Pons - Anterior vermis of cerebellum - Thalamus