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Fig. 1 | Frontiers in Zoology

Fig. 1

From: The nervous system in the cyclostome bryozoan Crisia eburnea as revealed by transmission electron and confocal laser scanning microscopy

Fig. 1

Organization of colony and zooids in Crisia eburnea. Photographs of live animals (a-b) and semithin sections (C-E). a A part of colony. b The same colony in higher magnification: tentacles and pores (arrowheads) in the wall of cystids are visible. c Sagittal longitudinal section of distal portion of zooid; tentacles semi-retracted. d Eight tentacles in the cross section. e Cross section of two branches of the digestive tract. Abbreviations: a – anus; as – atrial sphincter; ca – cardia; cae – caecum; cl – calcified layer; cg – cerebral ganglion; ec – epidermis; es – esophagus; int – intestine; lph – lophophore; mo – mouth; ms – membranous sac; pe – unmineralized cuticle; ph – pharynx; py - pylorus; t – tentacle; ts – tentacle sheath; z – zooid

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