Fig. 8From: Detailed morphology of tentacular apparatus and central nervous system in Owenia borealis (Annelida, Oweniidae)Schemes of the nervous system organization of the anterior body part of Owenia borealis. All nerve elements are shown in black. A Ventral view. B Lateral view. Abbreviations: anc – outer ring of the anterior nerve center; atn – aboral tentacle nerves; avc – peripheral zone of the ventral medullary cord; cf. – collar fold; cfp – collar fold dorsal nerve plexus; cn – cross nerve; com – ventral commissure; cor – inner (=circumoral) nerve ring of the anterior nerve center; dcn – dorsal cross nerve; dl – dorsal lip of the ventral pharyngeal organ; dn – dorsal neurites; ln – lateral nerve; lmc – lateral medullary cord; m – mouth; nep – neuropodia; nop – notopodia; otn – oral tentacle nerves; pbr – posterior portion of the brain; ph – pharynx; rcor – root of circumoral nerve ring; slp – serotonin-like immunoreactive perikarya; t – tentacle; tbn – tentacle neurite bundle; tc – tentacle coelomic cavity; vl – ventral lip of the ventral pharyngeal organ; vmc – ventral medullary cordBack to article page