Unformatted text preview: period. B. Activating parasympathetic vasodilator nerves can increase blood flow to the skin. C. In response to a cold environment, blood vessels in the skin dilate in order to increase blood flow to the surface and keep you warm. D. Onset of a fever is a positive physiological response because it aids in the body’s defense against infection. 3. Which of the following statements is correct concerning the mechanisms of heat loss? A. In a very humid environment, the body’s main method of heat loss is by evaporation because you tend to sweat more. B. The rate of heat loss from the body is faster in cold air than cold water. C. The body will lose more heat on a calm day compared to a windy day. D. The body can absorb heat through the process of radiation but the body will not lose heat because heat exchange only travels down the temperature gradient. E. None are correct. Answers: 1) D; 2) D; 3) E...
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This note was uploaded on 07/01/2008 for the course INTEGRATIV 130 taught by Professor Kregel during the Spring '08 term at University of Iowa.
- Spring '08