The opener muscle of the crayfish leg is presented for its historical importance and experimental versatility in muscle phenotype, synaptic physiology and plasticity.
Cooper, A. S., Cooper, R. L. Historical View and Physiology Demonstration at the NMJ of the Crayfish Opener Muscle. J. Vis. Exp. (33), e1595, doi:10.3791/1595 (2009).