Brain Saq 1 .mention the parts of brain.explain sulci gyri of superolateral surface of cerebrum 2.explain functional area of cerebrum 3.list parts of diencephalon explain the external features and nuclei of thalamus 4.define lateral ventricle explain boundaries of lat.ventricle,3rd ventricle ,4th ventricle. Explain each question as a 5mark answer with reference to BD chaurasia