B2 MOTONEURON

B2 is a large neuron located on the dorsal surface of each buccal ganglia. It has a single projection down the ipsilateral dorsal buccal nerve where it innervates the oesophagus. B2 is not strongly entrained to the feeding rhythm, although it does receive synaptic inputs from feeding CPG interneurons. B2 uses acetyl choline and nitric oxide as transmitters as well as containing small cardioactive peptide (SCPA and SCPB), and myomodulin peptides.

References

Benjamin, P.R., Rose, R.M., 1979. Central generation of bursting in the feeding system of the snail, Lymnaea stagnalis. J Exp Biol 80, 93–118. https://doi.org/10.1242/jeb.80.1.93

Benjamin, P.R., Rose, R.M., Slade, C.T., Lacy, M.G., 1979. Morphology of Identified Neurones in the Buccal Ganglia of Lymnaea Stagnalis. Journal of Experimental Biology 80, 119–135. https://doi.org/10.1242/jeb.80.1.119

Kellett, E., Perry, S.J., Santama, N., Worster, B.M., Benjamin, P.R., Burke, J.F., 1996. Myomodulin gene of Lymnaea: structure, expression, and analysis of neuropeptides. J Neurosci 16, 4949–4957. https://doi.org/10.1523/JNEUROSCI.16-16-04949.1996

Perry, S.J., Straub, V.A., Kemenes, G., Santama, N., Worster, B.M., Burke, J.F., Benjamin, P.R., 1998. Neural modulation of gut motility by myomodulin peptides and acetylcholine in the snail Lymnaea. J Neurophysiol 79, 2460–2474. https://doi.org/10.1152/jn.1998.79.5.2460