Page 35 - Never Plead Ignorance

HARUN YAHYA 33

Nautilus can dive to 4,000 metres. 7
It is actually not man who in-
vented cooling systems. Every
warm-blooded living being pos-
sesses various mechanisms for
temperature control. The gazelle, a
fast running African animal, must
often sprint to protect itself against
its enemies. Such effort raises the
body temperature. However, to
survive, it is essential that the
gazelle should keep its brain cool.
For this purpose, the gazelle
Nautilus, an interesting marine animal. has its own cooling system built
right into its head. Gazelles have
hundreds of small arteries that divide and pass through a large pool of
blood lying next to its breathing passages. Air taken in by the animal cools
this nasal pool, so the blood passing through the tiny arteries in it is
cooled, too. Then, the tiny arteries come together in a single blood vessel
that carries blood to the brain. In the absence of such a system, the gazelle
simply could not survive. 8

cooled arterial blood

cooled venous
blood

warm arterial blood evaporation
(Left) The shematic picture of the skeletal structure of gazelle. (Right) A
gazelle prepared to escape its enemy.