Scientists Studied the Thermoregulatory and Osmoregulatory Responses in Exercising Human

question 36

Multiple Choice

Scientists studied the thermoregulatory and osmoregulatory responses in exercising human subjects who were experiencing different levels of dehydration (0%, 3%, 5%, and 7% based on body weight) . After exercise, the subjects' body temperatures, sweating rates, and blood solute concentrations were measured. Their results are shown in these three graphs. Note that only sweating rate was measured after each bout of exercise. Body temperature was measured after the first two bouts of exercise, and blood solutes after only the first bout of exercise.
Source: Adapted from Sawka, M. N., Young, A. J., Francesconi, R. P., Muza, S. R., & Pandolf, K. B. (1985) . Thermoregulatory and blood responses during exercise at graded hypohydration levels. J Appl Physiol, 59, 1394-1402.
-What is the best explanation for the relationship between body temperature and dehydration?

• A) There is reduced evaporation.
• B) There is increased conduction.
• C) There is reduced radiation.
• D) There is increased convection.

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Definitions:

Genetics

The science of genes, heredity, and the variation of organisms.

Evolutionary Changes

Alterations in the genetic makeup of populations over successive generations, often leading to the development of new species.

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Elements within the surroundings that can influence or affect outcomes and developments in both natural and built environments.

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Molecules with an unpaired electron which can cause cellular damage, contributing to aging and diseases.