DEV2011 Lecture Notes - Lecture 16: Alar Plate, Neurulation, Sulcus Limitans
Document Summary
The central nervous system (cns) is the part of the nervous system that integrates the information that it receives from, and coordinates the activity of, all parts of the bodies. It contains the majority of the nervous system and consists of the brain and the spinal cord. Neurulation is the stage of organogenesis in vertebrate embryos, during which the neural tube is transformed into the primitive structures that will later develop into the central nervous system. The process begins when the notochord induces the formation of the central nervous system (cns) by signaling the ectoderm germ layer above it to form the thick and flat neural plate. The neural plate folds in upon itself to form the neural tube, which will later differentiate into the spinal cord and the brain, eventually forming the central nervous system. Different portions of the neural tube form by two different processes, called primary and secondary neurulation, in different species.