Physiology Endocrinology 1301039d In extreme cold, which is not a mechanism of thermogenesis A Shivering B Increased secretion of epinephrine C Increased thyroxine D Piloerection High-Yield Explanation Piloerection- the standing up of hairs on the skin to increase thermal insulation.Ref: Ganong&;s review of medical physiology; 24th edition