since the dendritic terminals of the spinal csf-contacting neurons resemble those of known sensory cells and the axon terminals on the basal lamina resemble ultrastructurally neurosecretory endings , we suppose that the former are receptive to stimuli exerted by the internal ( ventricular ) csf and capable of translating them into a neurosecretory output directed toward the external ( subarachnoid ) csf .
C0007634
cells
C0206181
axon