..., the value of which is more easily obtainable for different species than that for the mass of perfused muscle. The limited empirical evidence available suggests that for birds and mammals the rate of maximum oxygen consumption scales with heart mass ( M h ) as M h 0.88 and that for birds M h scales with body...

... and negatively with ambient temperature. Heart mass was also negatively correlated with temperature. Lung mass and hematocrit were, as expected, positively correlated with altitude (and P O2 ). Interestingly, the masses of both small intestine and kidney were negatively correlated with altitude. For kidney mass...

... 1989 heart rate heart mass action potential shrew small mammal caffeine Most studies of contractile regulation of mammalian cardiac muscle have been made on a small number of species of laboratory animals. Even within this small group of five or six species, prominent species...

...H. D. Jones ABSTRACT In vivo cardiac pressure and heart rate, and relative heart mass, have been measured in Busycon canaliculatum . Base pressure was about l·3cmH 2 O above ambient and effectively the same in the ventricle, atrium, pericardium and veins. Ventricular systolic pressures were very...