Fig. 10 in Development and structure of the anterior nervous system and sense organs in the holopelagic annelid Tomopteris spp. (Phyllodocida, Errantia)

Fig. 10 TEM images of Polychaete appendages with intracellular supporting structures. A, B Hesionides arenaria. A Slightly oblique section of the median antenna with four larger and three smaller intracellular skeletal rods (se). B Crosssection through apical part of the tentacular cirrus comprising two skeletal rods (se). C, D Microphthalmus similis. C Tentacular cirrus with about ten skeletal elements (se) situated somewhat eccentrically; the central part of cirrus comprises numerous neurites (ne). D Intracellular skeletal elements (se) with striation patterns surrounded by numerous neurites (ne). Key: cu, cuticle; ec, epidermal cell; g, Golgi apparatus; ne, neurite; rc, receptor cell; sci, sensory cilium; se, skeletal elements