Neck length and mean arterial pressure in the sauropod dinosaurs.

  title={Neck length and mean arterial pressure in the sauropod dinosaurs.},
  author={Stephen B. Hughes and John C. Barry and Jeremy H Russell and Robert Bell and Som Gurung},
  journal={The Journal of experimental biology},
  volume={219 Pt 8},
How blood was able to reach the heads of the long-necked sauropod dinosaurs has long been a matter of debate and several hypotheses have been presented. For example, it has been proposed that sauropods had exceptionally large hearts, multiple 'normal' sized hearts spaced at regular intervals up the neck or held their necks horizontal, or that the siphon effect was in operation. By means of an experimental model, we demonstrate that the siphon principle is able to explain how blood was able to… CONTINUE READING
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