Fig. 8
Innervation of tentacles in Crisia eburnea (TEM). Transversal ultrathin sections. a Whole tentacle; the abfrontal side is to the top. b Mediofrontal and laterofrontal neurite bundles. c Abfrontal and latero-anfrontal neurite bundles. d Neurite of large diameter of laterofrontal neurite bundle. e Peritoneal neurite. f Latero-abfrontal zone of tentacles with peritoneal neurite under the coelomic lining. Abbreviations: af – abfrontal tentacle nerve; clg – cell of coelomic lining; ec – epidermis; ecm – extracellular matrix; laf – latero-abfrontal tentacle nerve; lf – laterofrontal tentacle nerve; mf – mediofrontal tentacle nerve; m – mitochondrion; mi- microvilli; n – nucleus; nt – neurotubules; pn – peritoneal neurite