Figure 3From: Direct visualization of hemolymph flow in the heart of a grasshopper (Schistocerca americana)Relative timing of compression of the pericardial sinus (blue) and a main longitudinal trachea (red) in the dorsal abdomen (4th segment) of the grasshopper Schistocerca americana. This sequence shows that the movements of the pericardial sinus and the trachea are not phase locked.Back to article page