Re: tears

H. M. Hubey (hubey@pegasus.montclair.edu)
20 Oct 1995 17:07:42 -0400

pnich@globalone.net (Phil Nicholls) writes:

>The purpose of excreting something is to reduce the concentration of
>the substance in the body. Hence secretions must have a higher
>concentration of this substance than plasma or intercellular fluid.
>Therefore tears cannot excrete salt unless they have a higher
>concentration of salt than blood plasma. They don't.

This is rather silly.

Suppose you have a bathtub full of water mixed with some
chemical and you want to reduce the concentration of the
chemical.

do you need a special filter? No.

Open the drain, let some flush down the drain. fill it
up with water. Done.

-- 





				Regards, Mark

				http://www.smns.montclair.edu/~hubey