Accession Number : ADA330791

Title :   Thermoregulation, Chapter 12,

Corporate Author : ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA

Personal Author(s) : Wenger, C. B.

PDF Url : ADA330791

Report Date : OCT 1997

Pagination or Media Count : 31

Abstract : Lying at the boundary between the body and the thermal environment, the skin is strategically placed for an important role in thermoregulation, and serves both as a source of thermal information and as an effector organ for controlling heat loss from the body. Living tissue is directly injured if it is heated to temperatures higher than about 45 deg C , the level at which heating the skin causes pain, or if it is cooled so that ice crystals form in the cells. Because of its exposed location the skin is particularly vulnerable to injury by extremes of temperature in the immediate environment; and, in addition to its thermoregulatory responses, local vasodilator responses are elicited when tissue temperature rises toward 40 deg C or falls toward 10 deg C, which help to protect the skin against extremes of temperature.

Descriptors :   *THERMAL PROPERTIES, *TEMPERATURE CONTROL, SOURCES, POSITION(LOCATION), TEMPERATURE, TISSUES(BIOLOGY), ENVIRONMENTS, EXPOSURE(GENERAL), CRYSTALS, ICE, RESPONSE, WOUNDS AND INJURIES, PAIN, RESPONSE(BIOLOGY), HEAT, ORGANS(ANATOMY), HEAT LOSS, VASODILATION.

Subject Categories : Thermodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE