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Fig. 8 | Zoological Letters

Fig. 8

From: Detailed morphology of tentacular apparatus and central nervous system in Owenia borealis (Annelida, Oweniidae)

Fig. 8

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 cord

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