This introductory video offers a rudimentary description of the embryological development of nervous system. Recapping the previous progress of the developing embryo, it outlines the stepwise procedure of nervous system development and related anomalies. Timeline: 00:06 introduction 00:19 a brief recap 02:51 development of the neural tube 04:39 dorsal view of the neural tube 05:20 neural tube defects 05:31 Anencephaly 06:08 Spina Bifida 06:59 development of brain 09:15 origin of cranial nerves