Animal Form and Function

2x

Area = 1Strength = 1Weight = 1

Strength/wt = 1

Area = 1Strength = 4Weight = 8

Strength/wt = 1/2

flat

branched

folded

Aerobic respiration

Conformational homeostasis Regulatory homeostasis

HeterothermAlpine marmot

poikilotherm

homeotherm

Countercurrent heat exchange