The Morphogenic Mapping of the Brain and the Design of the Nervous System

Figure 3

(a) These halves are shown to undergo gastrulation, creating the central nervous system (colored pink) and the peripheral nervous system (colored green). Their spatial relationship with the formation of vertebrae is shown. (b) The connection between the spinal cord and the nerve roots is shown to push anteriorly into the vertebral opening. (c) The dorsal and ventral nerve roots twist and connect during gastrulation.