Fig. 18.

Overview of the lophophoral nervous system of Stephanella hina. Confocal laser scanning microscopy stacks based on acetylated alpha-tubulin labelling. Volume renderings. Acetylated alpha-tubulin in green LUT, f-actin in glow LUT. a Volume rendering showing an overview of the lophophoral nervous system. One of the abfrontal neurite bundles and its roots have been highlighted in white. b Oral view of the circum-oral nerve ring closing medially on the oral side (asterisk). c Close-up of the lophophoral base showing radial nerves and their position with respect to the abfrontal tentacle muscle bands. Abbreviations: afm – abfrontal muscle band, afn – abfrontal neurite bundle, afr – abfrontal neurite bundle root, con – circum-oral nerve ring, itm – distal border of the intertentacular membrane, lc – lateral cilia, lfn - latero-frontal neurites, mfn – medio-frontal neurite bundle, ph – pharynx, php – pharyngeal plexus, rn – radial nerve