A person has a heart of about

PHYSICS · Multi-part · Fermi University Physics · Biophysics & Medical Physics · Bioelectricity, the senses and the physics of the body · Bioelectricity, the senses and the physics of the body

Life at Thermal Energy, Ch Bones, muscles, blood and body size

Problem

70\,\mathrm{kg}

person has a heart of about

300\,\mathrm{g}

, and a

20\,\mathrm{g}

mouse has a heart of about

0.10\,\mathrm{g}

. ((a)) Treat the two animals as two points on a log-log plot of heart mass against body mass, and find the slope

b

of the line through them. ((b)) Say which guessed line,

M^1

M^{2/3}

, this slope is nearer, and what that says about how heart mass scales with body mass.

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