the total volume of blood in the body does not vary. unlike marine mammals, we cannot pool a large quantity when diving. [see rete mirabile] the net result of cold water diving is more blood flow thru the core, heart & brain. this can make one more prone to oxygen toxicity. peteV saintpetersburg -- Send mail for the `techdiver' mailing list to `techdiver@aquanaut.com'. Send subscribe/unsubscribe requests to `techdiver-request@aquanaut.com'.
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