On tubes, strings, and resonance in the arterial system-what makes the beat go on?

In conclusion, Wang et al. propose a challenging concept of energy transfer which is inherently consistent with the basic constitutive relations of fluid flow in elastic tubes. However, some of the basic parameters which underlie the natural frequency of the arterial system and current matching concepts need further investigation and in vivo experimental validation. Furthermore, the present fundamental discussion offers a convincing example of how investigations in the field of classical hemodynamics continue to form a scientific challenge, in addition to controversies related to newer fields such as molecular biology.