Figure 3From: The dynamics of venous return and response to hypervolemia in the toad, Bufo marinus (L.)Flow tracings from the renal portal vein of Bufo marinus showing sharp extra pulsations at: A) 50 min post injection, flow values shown for renal portal vein; and B) 55 min post injection with recording expanded, flow values shown for pulsations above resting renal portal flow. The injection was performed at t = 0 min. Chart speeds are: A) 1 mm sec-1; and B) 10 min sec-1.Back to article page