Page 129 - Design in Nature

Blood: Life-giving Fluid 127

yellowish fluid, which comprises 5% of the
normal body weight. In this fluid, 90% of Carotid Jugular
artery vein
which is water, salts, minerals, carbo- Aortic Lung
arch vessels
hydrates, fats and hundreds of different types Heart
Brachial
of proteins are suspended. Some of the Vena Artery
cava Vessels of
proteins in the blood are transport proteins, kidneys,
Aorta liver and
which bind lipids and carry them to tissues. If digestion
system
the proteins did not in this way carry the Iliac
arteries
lipids, the lipids would randomly float and veins
Femoral
anywhere, giving way to fatal health arteries
and veins
problems.
Hormones in the plasma take on the role
of special couriers. They facilitate com- Tibial
arteries
munication between organs and cells by and veins
means of chemical messages.
Albumin is the most populous hormone
in the plasma, which is in a sense a
The circulatory system feeds each one
transporter. It binds lipids such as cholesterol, of the hundred trillion cells that
constitute the human body. In the
hormones, billirubin, a toxic yellow bile figure, the red vessels represent
oxygenated blood and the blue depict
pigment, or medicines like penicilin. It leaves the deoxygenated blood.
the poisonous substances in the liver and takes other nutrients and
hormones to wherever they are needed.
When all these things are considered, it becomes clear that the body is
created in an extremely detailed way. The abilities of a single protein to
distinguish between lipid, hormone and medicine, and to determine not
only the locations in need of them but also the amounts to be delivered, are
all indications of flawless design. Furthermore, these surprising examples
are only few out of dozens of thousands of different biochemical events
taking place in a body. All of the trillions of molecules in the body work in
a marvellous harmony. And, in fact, all of these molecules spring from the
division of a single cell that forms in the womb of a mother. It is clear that
this miraculous system of the human body is a wonderful artistry of Allah,
Who created man from a single drop of water.