Question

1. Alcohol causes dilatation of arterioles and a sensation of warmth. Would you recommend that someone who is stranded in the snow drink alcohol to keep warmth. why or why not. 2. a condition called hyperthermia (heat prostration) can result when the body's homeostatic mechanisms are no longer adequate to counter the effect of high external temperatures. On the basis of what you know about vasoconstriction and vasodilation as methods of temperature regulation in the body, describe the skin color of someone who is in the first stages of hyperthermia.

Answer 1

ANSWER 1 -

Drinking alcoholic breverage , by someone stranded in the snow can make them feel warmer but actually does not keep them warm or prevent hypothermia , insted it lowers the core body temperature. Alcohol is a vasodilator causes blood vessels to dilate , particulary capillaries .During drinking the volume of blood below the skin surface increases , making the person feel warm. But the blood underneath the skin will rapidly cool because of the chill in the air and the warmth caused due to rushing the blood in the capillaries of the skin will also make him sweat , thereby droping the core body temperature.

ANSWER 2-

Early stage of hyperthermia is Heat stress or Heat prostration .

Symptoms - Heavy sweating, Rapid brathing ,Weekness, Nausea , Vomitting ,Fast weak pulse .

Skin is reddened