Page 81 - For Men of Understanding

heat to vaporise and this causes coolness.
It retains body heat in cold weathers: In cold weathers, the activity of
sweat glands slows and the veins narrow. This decreases the blood circulation
under the skin therefore preventing body heat from escaping.
What all of this shows is that human skin is a perfect organ specially
designed to facilitate our lives. Skin protects us, functions as an "air-condition-
er", and facilitates easy locomotion thanks to its flexibility. Moreover, it is aes-
thetic.
Instead of this type of skin, we could well have a thick and coarse skin. We
could have an inflexible skin that would crack and split in the event we put on
even a few kilograms. We could have skin that would cause us to faint from
heat in summer and freeze in winter.
However, Allah, Who created us, has
covered our body in the most comfort-
able, serviceable and aesthetic way. For
carotid jugular
He is "the Creator, the Maker, the artery veins
Giver of Form." (Surat al-Hashr: 24). aortic arch lung
veins
heart
THE HEART brachial
artery
The most important component of vena
cava
the circulatory system that connects the veins
aorta belonging to
100 trillions cells in the human body kidney, liver
and diges-
one by one, is, without doubt, the heart. tive system
With its four different chambers that iliac artery
and veins
pump deoxygenated and oxygenated
blood to different parts of the body femoral
artery
without mixing them with one another, and
veins
and with its valves that function as safe-
ty valves, the heart’s design depends on
highly delicate balances.
Our heart, which constantly beats
throughout our lives at a certain pace tibial
artery
although we do not intervene at all, is and
veins
one of the clearest pieces of evidence of
the Creation.
Starting to beat in the mother’s
The circulatory system connects each one of the 100
womb, the heart works, without stop-
trillion cells in the human body. In the picture, the red
ping at all during our entire lifetime, capillaries represent blood with high oxygen content and
the blue ones represent blood with low oxygen content.
with a rhythm of 70-100 beats per

The Human Being 79