Fig. 15.

Innervation of the tentacle sheath in Cinctipora elegans. Stainings of acetylated alpha-tubulin (green), all volume renderings. Tentacle sheath neurite bundles highlighted in light blue. a Lateral view of the retracted lophophore surrounded by the tentacle sheath and its innervation on the anal side of the zooid. b Slight oblique view from the anal side showing the two bundles emanating from the cerebral ganglion. c Similar view as in B, but with more opaque rendering. Abbreviations: cg – cerebral ganglion, con – circum-oral nerve ring, fg – foregut, l – lophophore, o – orifice, tn – tentacle neurite bundles, tsn – tentacle sheath neurite bundles, vn – vestibular neurites