At 07:26 AM 4/1/98 +1000, you wrote:
>>>Interesting! This suggests that this type of metabolic depression may also
>>>combine with respiration in limiting the duration of a dive.
I cannot agree with this conclusion. During exercise even mammalian
athletes divert blood flow away from the skin and alimentary systems to
supply the skeletal muscles, heart and brain. This is the reason why you
should not eat much during or immediately after exercise. There is no need
for a counter-current mechanism, the blood supply is just shut off to these
non-vital organs - hence a drop in temperature. Of course catching a cold
fish wouldn't help much either!
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Shane Raidal BVSc PhD MACVSc
Lecturer in Veterinary Pathology
Veterinary and Biomedical Sciences
Murdoch University phone: +61 8 9360 2418
Perth,WA, 6150 fax: +61 8 9310 4144
Australia
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On average - all people have less than two legs.
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