Page 130 - Design in Nature

128 DESIGN IN NATURE

Special Control Mechanisms If a blood clot
(above) forms
Nutrients have to cross from the
in the coronary
arteries through the artery wall, in veins of the
heart and
order to penetrate into the necessary
continues to
tissues. Although the artery wall has enlarge, it
leads to a heart
very small pores, no substance can
attack. In some
penetrate it by itself. It is the blood situations due
to blood
pressure that facilitates this
pressure, heart
penetration. However, nutrients tissue is
crossing over into the tissues in larger ruptured. Blood
gushes out of
quantities than necessary causes the heart as if
inflammation in the tissues. Therefore, spraying from a
hose (below).
there is a special mechanism instituted
for balancing blood pressure and withdrawing fluid back to the blood. This is
the responsibility of albumin, which is larger than the pores in the artery wall
and numerous enough in the blood to suck up the water like a sponge. If there
were no albumin in the body, it would swell like a dry bean left in water.
On the contrary, materials in the blood should not enter the tissues of
the brain uncontrolled, since unwanted substances can severely damage
nerve cells (neurons). Therefore, the brain is protected against all possible
scenarios of harm. Dense cell layers close off pores. All substances are
required to pass through these layers as if passing through a security
checkpoint, which facilitates a balanced flow of nutrients into the most
sensitive organ of the whole body.

Thermostat in the Body
Apart from toxins, red blood cells, vitamins and other substances,
blood also carries heat, a by-product of energy generation in the cells.
Distributing and balancing body heat in accordance with the outside
temperature is vitally important. If there were no heat distribution system in
our bodies, our arms would overheat and the rest of the body would be cool
when the arm muscles are used, which would greatly damage the
metabolism. This is why heat is evenly distributed throughout the body,
which is facilitated solely by the circulatory system. In decreasing the body-