PATHOLOGY

Detailed explanation-1: -Increasing the amount and speed of blood flowing to and within the skin by widening the blood vessels (vasodilation) allows more heat to be lost thereby reducing body temperature. Narrowing the blood vessels (vasoconstriction) means less heat will be lost this way thereby maintaining the core temperature of the body.

Detailed explanation-2: -The skin’s immense blood supply helps regulate temperature: dilated vessels allow for heat loss, while constricted vessels retain heat. The skin regulates body temperature with its blood supply.

Detailed explanation-3: -This conserves heat. Vasodilation occurs when the blood vessels of the skin dilate, and the flow of the blood to the surface is increased. An increased flow of blood to the skin increases the amount of heat loss from the blood vessels of the skin to the environment, increasing heat loss.

Detailed explanation-4: -Cutaneous vasoconstriction (VC) is the initial thermoregulatory response to cold exposure, minimizing convective heat loss to the environment through distinct reflex and local pathways that work both independently and cooperatively to maximize VC.