The document outlines the embryology and development of the brain from formation of the neural tube through development of the cerebral cortex and corpus callosum. Key stages discussed include development of the primary brain vesicles and their subdivisions, flexures of the neural tube, external form of the brain from 10-40 weeks gestation, ventricles of the brain, medulla oblongata, pons, midbrain, cerebellum, cerebral hemispheres, thalamus, hypothalamus, corpus striatum, hippocampus, and cerebral cortex.