Fig. 5

Overview of the cerebral ganglion and main neurite bundles of Hypophorella expansa. Acetylated alpha tubulin staining (green), f-actin (glow), CSLM, volume rendering. a View from the anal side of an extended polypide showing the ganglion and visceral and tentacle sheath neurite bundles. Note also the ciliary streets on each side of the medio-visceral neurite bundle. b Similar to A, but showing the extension of the polypide from the apertural area. c Oblique view of the lophophoral base showing main peripheral neurite bundles from the ganglion. d Oblique view of the lophophoral base showing the circum-pharyngeal plexus. Abbreviations: afn – abfrontal tentacle neurite bundle, am – apertural muscles, btm – basal transversal muscle, cae – caecum, cac – cardiac valve ciliation, cg – cerebral ganglion, con – circum-oral nerve ring, dtn – direct tentacle sheath neurite bundle, fgc – foregut ciliation, int – intestine, l – lophophore, lvn – latero-visceral neurite bundle, mvn – medio-visceral neurite bundle, pp – peripharyngeal plexus, py – pylorus, tfd – trifid nerve, tft – distal branch of trifid nerve, tm – tentacle muscles, tsn – tentacle sheath neurite bundle, vwm – vestibular wall musculature