NEARLY ten years ago it was found 1,2 that adrenaline, noradrenaline and 5-hydroxytryptamine (5-HT) are present in relatively high concentrations in that part of the wall of the third ventricle ...
The body control systems have three basic parts: The hairs on the skin also help to control body temperature. The hairs lie flat when we are warm, and rise when we are cold. If we are too cold ...
MAN thrived earliest and most prolifically in areas of the world with a mean annual temperature close to 21°C. (70°F.). 1 His migrations from the 21°C. isotherm were for the most part ...
This temperature regulation of gene expression produces rabbits with a distinctive coat coloring. In the warm, central parts of the rabbit's body, the gene is inactive, and no pigments are ...