JEB -- Mackie et al. 206 (14): 2487 Figure IG14

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Fig. 14. Nerves and muscles in the manubrium. Nerves are labelled with anti-FMRFamide, muscles with phalloidin. (A) One of the four manubrial lips (l) with FMRFamide-like immunoreactivity (FaIR) in a nerve tract (t) running aborally. This tract becomes the small axon bundle that goes to the margin. (B) Sensory cells at the lip edge. (C) Longitudinal (horizontal) and circular myofibrils in the wall of the manubrium. The longitudinal muscles are concentrated into longitudinal muscle bands (lmb) that underlie the FaIR nerve tracts shown in A.