start stage end stage cerebrospinal fluid contacting neuron ventral cerebrospinal fluid contacting neuron ZFA:0007121 KA 2 A cerebrospinal fluid contacting neuron that originates form p3 progenitor domain. The apical extension of ventral CSF-cNs are more compact than that of dorsal CSF-cNs. Ventral CSF-cNs synapse with CaP motor neurons and project onto CoPA sensory interneurons. Ventral CSF-cNs respond to longitudinal contractions of the spinal cord. Frequently called "KA neurons". ventral CSF-cN Yvonne ventral CSF-cNs 2020-03-03T10:51:35Z zebrafish_anatomy segmentation:1-4 somites adult