A hypothesis of a hydroacoustic cardiac/ circulation function

The authors have challenged the traditional theories of cardiac sound genesis and found out that cardiac sounds could be detected on carotid, ulnar and even femoral arteries, whereas it is harder to detect them in the thoracic wall zone. The authors have put forward a hypothesis of genesis of the 1st and 2nd cardiac sounds as a result of active oscillations of subendocardial fibers of the intraventriculat septum and the ventricles caused by organized pulses going via the His bands and in the node of Aschoff and Tawara. They also believe that the 1st and 2nd cardiac sounds function as circulation-organizing impulses, the 1st cardiac sound directs blood in the systole, thus debilitating arteriolar sphincters and perfusion of capillaries, while the 2nd cardiac sound debilitates and fills the ventricles with blood in the diastole. The heart itself operates as an acoustic endosonar