A)
Based on what you know about
respiratory and cardiovascular physiology, describe in what ways
(how) the anatomy...
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Medical Sciences
A)
Based on what you know aboutrespiratory and cardiovascular physiology, describe in what ways(how) the anatomy and physiology of these artic mammals might bedifferent from mammals from warmer climates to compensate forthis?
B) Briefly describe why what you propose in (c) isadaptive for these large arctic mammals.
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ABExplaination Physiological difference Maintaining core temperature in the cold The ambient air temperature in the polar regions may persist at 40C for extended periods regularly reaching 50C and occasionally even 60C whereas in the oceans the temperatures are close to freezing For a homeothermic animal exposed to these conditions sometimes with a thermal gradient between the body core and the environment of almost 100C the challenge is first and foremost to balance heat loss against a minimal rate of metabolic heat production In the polar regions where at least on land energy is often in short supply this is preferentially achieved by control of heat loss to the environment There are three main avenues for heat loss conductionconvection radiation and evaporation each of which
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