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. Author manuscript; available in PMC: 2014 Jul 2.
Published in final edited form as: J Comp Neurol. 2012 Apr 15;520(6):1198–1211. doi: 10.1002/cne.22768

Figure 1.

Figure 1

Diagram of the migratory pattern of sympathetic and parasympathetic preganglionic neurons, also termed spinal autonomic motor neurons (AMNs). Together, autonomic and somatic motor neurons (SMNs) are generated in the ventricular zone (VZ) and migrate radially into the ventral horn along the pathway marked by arrow 1. The SMNs remain ventrally as the AMNs migrate dorsally along a tangential pathway (arrow 2) to reach the intermediolateral horn. A limited number of sympathetic preganglionic neurons then migrate medially along the radial pathway marked by arrow 3.