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Chapter 16

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Department
Anthropology
Course
ANT203H5
Professor
Heather Miller
Semester
Summer

Description
Chapter 16Acclimatisationthe physiological adjustment of individual organisms to different conditions is a reversible process the length of time in which these reversible changes occur can varyas warm blooded creatures humans have the ability to maintain a constant body temperature cold stressto increase heat production temporarilyshiver which increases metabolic rateVasoconstriction the narrowing of blood vessels which reduces blood flow and heat lossVasodilation the opening of blood vessels to increase blood flow and heat lossboth must operate back and forth to maintain a balance between heat loss and damage to extremitiesLewis hunting phenomenon the alternating cycle of vasoconstriction and vasodilation skin temperature changes more quickly but the increases and decreases are not as greatthe smaller and more frequent cycles are most efficientheat stress your body is not removing heat quickly enough4 ways in which heat is lost from body 3 of which can also increase heat1Radiation heat flow from objects in the form of electromagnetic radiation both ways2
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