HSC 308 Final Exam Questions and Answers – Updated 2024
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Course
2024/2025
Institution
2024/2025
HSC 308 Final Exam Questions and
Answers – Updated 2024
Humans are homeothermic. Explain. - Answer-Internal body temperature regulated, nearly
constant despite environmental temperature changes
What is the difference between acclimation and acclimatization? - Answer-Acclimation:
short term a...
Cooling leads to the release of thyroxine, catecholamines
Hormonal stimulation of heat production
Explain cardiovascular drift in relation to an elevated core temperature. - Answer✔✔-Skin
arterioles VD to inc. Convection heat loss, requires inc. blood flow compared to exercise in the
cold
POAH triggers SNS: cardiac output inc. further via HR/contractility, inc. VC to nonessential
tissues
Blood volume dec. (sweat), SV can't inc. (blood pooling), so HR inc. further to compensate
(cardiovascular drift)
Describe a physiological limitation to exercise in the heat. - Answer✔✔-- Cardiovascular system
overload
Heart cannot provide sufficient blood flow to both exercising muscle and skin
Impaired performance, inc. risk of overheating
Especially in untrained or non acclimated athletes
- Critical temperature theory
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