Re: tears
H. M. Hubey (hubey@pegasus.montclair.edu)
20 Oct 1995 17:05:35 -0400
David Froehlich <eohippus@moe.cc.utexas.edu> writes:
>On 18 Oct 1995, H. M. Hubey wrote:
>> that no matter how you lose water i.e. via kidneys, sweating
>> or tears it has to be replenished. And if you excrete salt with
>> the fluids you are obviously excreting salt.
>>
>reference my previous post, the basic point is efficiency. You assume
>access to a voluminous supply of fresh water because the tears are not
>concentrated (isotonic). Is this likely to be a major method for salt
>balance?
I said no such thing. I already said it's not efficient as
it stands.
I commented on your claim that it would not work as a
method to excrete salt. I also did not say that we don't
need kidneys or that we did not have them.
Whether at one time the weeping was more regular or that
it was a large scale effort which would/could have been
used similar to kidneys is a different story and I said
nothing about either. So far it looks like weeping still
seems to be restricted to a specific set of animals.
--
Regards, Mark
http://www.smns.montclair.edu/~hubey
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