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Figure 5


Fig. 5. (A) Optical recordings from both hearts (black) in segment 11 and from the latero-abdominal vessels (blue) and sphincters (red). The latero-abdominal sphincters close briefly just before maximal diastole (asterisks), causing a simultaneous interruption of flow in the vessels. (B) Position of the analysis windows around the hearts and the latero-abdominal sphincter and vessel.