THE RED BLOOD CELL-A MIRACLE PARTICLE
The value of blood as a
life-safer and life-sustainer has been appreciated from the earliest times in
the history of mankind. In fact, our ancestors recognized the value of blood
perhaps more than we do today. Sacrifices, now and in the past, are performed
to spill the blood of an animal and thereby appease the angry gods.
The conventional symbol of blood
is red, and this generally signifies the danger that might follow the spilling
of blood through accident or violence. The red flag of revolutionaries is
purported to be symbolic of the blood spilled by heroes during popular
uprisings.
Scientifically, blood is the
agent that carries the vitalizing agent oxygen to all tissues of the body, and
carries carbon dioxide from the tissues for excretion in the lungs. Blood is
given to hospital patients in order that they may not die from excessive
bleeding or from severe anemia.
Such is the value and importance
of blood to all animal and human life that this list could continue
indefinitely. Yet all such value and significance can be attributed mainly to
tiny particles in blood –the red blood cells.
They are so minute that they
cannot be seen by the naked eye and yet no mammalian life is possible without
them. Their recognition requires at least the magnification afforded by light
microscopy.
The average red blood cell is
shaped like a biconcave disk measuring 7 microns in diameter. It has a volume
of 90 femtoliters and contains 30 picograms of hemoglobin. About five million
of these tiny elements are in a microliter of blood, and nearly 300 microliters
make up a drop of blood!
One dares not therefore attempt
to calculate the number of red cells present in an average milliliter or cubic
centimeter of blood –and even more frightening, the number of cells in one pint
or 500 milliliters of blood, the conventional unit of collection and
transfusion of blood.
FLEXIBLE CELL WALL
Each particle has a cell wall
made up of fat [phospholipid] and protein in such a way that fluid cannot enter
or exit from the cell unless there is a break in the continuity of the cell
wall or if the cell is placed in a solution which is either weaker or stronger
than its internal fluid environment.
The cell wall is flexible, a
characteristic which enables the blood cell to squeeze through tiny blood
vessels, some of which have diameter smaller than its own.
The cell wall encloses a
cytoplasm which contains, among other things, enzymes which break down glucose,
and thus produce energy in the process to aid the cell’s activity. And more
importantly, the cell contains hemoglobin, a red pigment containing iron, which
carries oxygen from the lungs to the tissues and carbon dioxide from the
tissues to the lungs, and thence to the outside world, as mentioned earlier.
It is, in fact, this pigment
which makes the red cell unique among the cells of the body. Its importance
cannot be overemphasized, as it is the life line of the individual.
One gram of hemoglobin carries
approximately 1.34 millimeters of oxygen. A normal hemoglobin level in average
adult is around 15 grams per 100 millimeters of blood. Every minute the heart
pumps about 5 liters of blood around the body in an average-sized man, the
equivalent of 750 *1.34 milliliters of oxygen –to the tissues of the body per
minute.
VALUE OF HEMOGLOBIN
The physiological value of
hemoglobin as an oxygen carrier lies in its affinity for oxygen, which is so
nicely balanced that hemoglobin becomes 95-96% oxygenated in the lungs, while
in the tissues and capillaries, it can give up as much of the gas as is
demanded.
If the affinity were much less,
complete oxygenation in the lungs could not be approached; if it were greater,
the tissues would difficulty in removing from the blood the oxygen they need.
Thus, both oxyhemoglobin and reduced hemoglobin exist in all parts of
circulation but in greatly varying proportions.
The hemoglobin that is freed
after release of oxygen picks up carbon dioxide produced in the tissues as part
of the tissues’ waste products of metabolism. The carbon dioxide combines with
the hemoglobin to from carbonxyhemoglobin which travels in the veins back to the
lungs, where the carbon dioxide is released by enzyme activity, and hemoglobin
is once again free to take oxygen back to the tissues from the lungs.
The cycle then continues, with
oxygen coming into the lungs with each breath we take and carbon dioxide being
expelled with each exhalation. Red cells are produced in the bone marrow and
require iron, folic acid, and vitamins among other things for normal function.
When the diet is persistently low
in these elements, the hemoglobin content of the red cell becomes low and the
situation called ANEMIA ensues. On the other hand, some people are born with
red cells containing abnormal hemoglobins, such as in sickle cell anemia, and
Thalassemia.
Scientists using newer and more
sophisticated tools have now described hundreds and hundreds of abnormal
hemoglobins. Techniques used in these discoveries include electrophoresis,
genetic studies, isotopy, x-ray diffraction studies, and “finger printing” of
hemoglobins, to name a few.
To the mystic, the air we breathe
contains, quite apart from the oxygen we have been discussing, the positive
aspect of Nous, viz., the vital life force. This comes into human body with the
first breath of the newborn baby. Apparently every subsequent breath
replenishes it.
Basically, however, the red cells
are negatively charged, whereas the vital life force is positively charged. By
the law of polarity, the negatively charged particle has an irresistible
affinity for the positively charged force. So the vital life force in the air
we breathe into the lungs passes from the lung air spaces to the red blood
cells circulating in the blood vessels.
In conclusion, we might like to
remind ourselves that each cell of the body is a unique entity that has a
psychic and a physical part. It is probable that the oxygen vitalizes the
physical part and the vital life force vitalizes the psychic aspect of each
cell.
It is incontrovertible that the
particle which coordinates the supply of both the oxygen and the vital life
force to the tissue cells must be unique. The red blood cell is truly a
“miracle particle.”
Comments
Post a Comment