Subradular organ

The subradular organ is a sensory organ below the grinding mouthparts (radula) of some molluscs, specifically the chitons. This organ is involved in chemoreception - that is, in judging the nature of food or the substratum. In this sense, it can be considered a 'smell' or 'taste' organ; food is sensed before each stroke of the radula. Nerve cells from the subradular organ join into the buccal nerves.

References

1 2 Boyle, P. R. (1975). "Fine structure of the subradular organ of Lepidochitona cinereus (L), (Mollusca, Polyplacophora)". Cell and Tissue Research. 162 (3): 411–417. doi:10.1007/BF00220187. PMID 171073. S2CID 13584448.
↑ Biserova, Natalia M. (2015). "11. Platyhelminthes: Neodermata". In Schmidt-Rhaesa, Andreas; Harzsch, Steffen; Purschke, Günter (eds.). Structure and Evolution of Invertebrate Nervous Systems. Oxford University Press. ISBN 9780191066214.

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[Boyle1975-1] 1 2 Boyle, P. R. (1975). "Fine structure of the subradular organ of Lepidochitona cinereus (L), (Mollusca, Polyplacophora)". Cell and Tissue Research. 162 (3): 411–417. doi:10.1007/BF00220187. PMID 171073. S2CID 13584448.

[2] Biserova, Natalia M. (2015). "11. Platyhelminthes: Neodermata". In Schmidt-Rhaesa, Andreas; Harzsch, Steffen; Purschke, Günter (eds.). Structure and Evolution of Invertebrate Nervous Systems. Oxford University Press. ISBN 9780191066214.