Blood's Journey Through The Veins
previous chapters we referred to a gigantic network
of nerves running right through our bodies. There is
another such miraculous network. This consists of blood
vessels. Like the network of nerves, blood vessels,
too, circulate through the body. They are so long that
their total length would be about 100,000 kilometres
(62,000 miles) if they were spread over a flat surface.
In fact, it is not hard at all to understand that there
are blood vessels all around our body. Even a small
scrape on any part of our body would start to bleed
immediately. This proves that blood circulates all through
our body. It is vital that we have blood vessels at
every point because, as mentioned in the previous chapter,
the nourishment required by the body cells is conveyed
through the blood vessels. Oxygen that cells need for
proper functioning is also carried to cells by the blood
flowing through our veins.
of the nourishment in the blood vessels may be compared
to transporting freight by ship. Prior to shipment,
first of all goods are placed upon the ship at the port.
Goods should be properly packaged and placed. After
all are loaded, the ship sets out and heads for the
port of its destination. When it arrives at the port,
all packages are unloaded and distributed to the concerned
sections. In the blood vessels, nourishment is similarly
transported to cells, just as ships transport cargo
across the ocean. Oxygen, fats and amino acids flow
in the bloodstream in packages and are unloaded at the
target cells. This transportation schedule never fails.
Proper amounts of required substances are conveyed to
relevant cells just on time. Otherwise, for instance,
if a cell that needed oxygen received fats instead,
this cell would die. It should be noted that even the
slightest mistake in this system could result in serious
harm. Such mistakes never happen except in unusual cases,
however, because none of these came into existence by
chance. Allah, the Creator, created this system perfectly
for our service.
As blood circulates all through the body,
it fulfills many tasks. Now let's have a brief look
at these tasks.
have already explained that all the kinds of substances
that our body needs are conveyed to the concerned organs
by blood. In the meantime, blood cells collect waste
matters, like carbon dioxide, and make sure that they
are discharged from the body. In a way, blood acts like
a garbage grinder. Stopping by each of 100 trillion
cells again and again throughout the day, it leaves
the cells what they require and at the same time collect
what is not needed.
Blood, which is merely a fluid, can faultlessly
perform a task demanding such attention and responsibility.
It knows each of the substances it carries, what it
will be used for and to where it should be delivered.
For instance, it does not mistakenly convey to a cell
the carbon dioxide it has taken from another cell as
a waste product. It always supplies cells with oxygen
and removes carbon dioxide. Blood performs this task
with no mistakes or fatigue, because it is a part of
the perfect plan that Allah created in the human body.
As they unconditionally surrender to the system created
by our Lord, all blood cells perform their tasks without
making any mistakes.
SOLDIERS IN THE BLOOD
There are different types of
cells in the blood, each of which performs a different
task. As seen in the picture above, some of these
cells carry food while some others defend the
body like soldiers.
Everyday our bodies
struggle against many bacteria, viruses and microbes.
Some are prevented from entering the body, while some
manage to enter. But there are special defence cells
in our bodies to fight against them that are called
immune cells. These cells, which are like soldiers fighting
against the enemy and protecting our bodies from dangers,
move in the bloodstream. Whenever there is an enemy
attack, they can reach the related part of the body
through the blood vessels and easily fight against the
enemy. Immune cells have not learnt their missions on
their own. They have known them since they came into
being. They start performing their duty and protecting
the body the minute a baby born. This is an excellent
detail in Allah's creation. Our Lord has taught cells
which cannot be seen with the naked eye very important
knowledge and placed them at our service.
also serves as a means of communication in the body.
There are messengers in the blood taking messages from
one part of the body to another. These messengers, known
as hormones, transport messages to the relevant organs
like a postman delivering mails. Many significant processes,
including the growth of the body, thirst, perspiration
and control of blood sugar levels are thanks to such
precisely delivered messages.
As seen in the picture above,
hormones travel through the bloodstream with the
messages they carry and deliver these messages
to the relevant organs.