Subject: Question about Octopus

From: [email-masked]
Date: 9 Dec 1996 01:33:51 GMT

I will  appreciate an answer to the following trivia question that my
child asked me recently.

The question is:

How many hearts does an octopus have?

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From: JJ Robinson II <[email-masked]>
Date: Fri, 13 Dec 1996 22:11:13 -0600

> How many hearts does an octopus have?

Octopi, squids, and cuttlefishes have three hearts---one for the
systemic, 
or body circulation, and one for each of the two banks of gills.  They 
are probably unique among invertebrates---and downright incredible for 
Molluscs---in having a fully closed circulatory system comparable to 
that of Vertebrates.  They also have much higher circulatory pressures 
than other invertebrates because of superior circulatory efficiency.  

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* JJ Robinson II                                   *
* MKIA Research                                    *
* [email-masked]                                  *
* http://www.flash.net/~mkia1                      *
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* The Truth is the only form of government that    *
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