Neurons in Lymnaea
Maps of neurons on the dorsal (a) and ventral (b) surfaces of the Lymnaea CNS, showing the location of serotonin (shaded) and non-serotonin- (unshaded) containing cells. The cerebral ganglia are shown with the cerebral commissure cut and the left and right ganglion folded out to give a flattened, two-dimensional view of the CNS. Identified cells are labelled in the right pedal, identified clusters labelled in the left pedal ganglion. Both have symmetrical equivalents in the contralateral ganglion.
Ganglia: buccal (b,.g); cerebral (cr.g.); pedal (pd.g.); pleural (pl.g.); parietal (pa.g.); and visceral (v.g.). L, R and 1, r indicates left and right; A, P indicates anterior and posterior.
Lobes of the cerebral ganglia: anterior (al); ventral (vl); and dorsal (dl).
Major nerves, connectives and commissures:
This summarises the data from immunostaining, 5,6- or 5,7-DHT pigment labelling, and glyoxylic acid staining.
Modified from maps in Kemenes et al, (1989) J. Neurocytol 18:193ff, and Vehovszky & Elliott, (2001, in press)