Abstract
Skin vessels of the human finger and toe can constrict in response to local skin heating. This vascular response is, therefore, not confined only to the skin of animals, such as the sheep's leg, rat's tail, rabbit's ear, and kangaroo's tail. The target of this response appears to be arteriovenous anastomoses of the glabrous side of hand and foot. This "heat-induced" vasoconstriction appears to retard heat input from hot exterior environment.
