PATHOLOGY

Detailed explanation-1: -In the reactions of an animal’s metabolism, much of the energy stored in fuel molecules is released as heat. This is not necessarily a bad thing! Some animals can use (and regulate) their metabolic heat production to maintain a relatively constant body temperature.

Detailed explanation-2: -Blood vessels leading to the skin capillaries become wider-they dilate-allowing more blood to flow through the skin and more heat to be lost to the environment. This is called vasodilation .

Detailed explanation-3: -In warm temperatures, these same blood vessels dilate or widen, increasing the flow of blood to the skin surface, thus allowing heat to leave the body, and keeping the core body temperature from rising to a dangerous level.

Detailed explanation-4: -At high environmental temperatures, when skin temperature is elevated, skin blood flow at any given internal temperature reaches higher levels than at cooler skin temperatures.