Blood: Life-giving Fluid

Crucial Functions of Blood

Blood is a liquid that is created to give our bodies life. As long as it circulates within the body, it warms, cools, feeds and protects by cleansing the body of toxic substances. It is almost solely responsible for communication within our bodies. In addition, it immediately repairs any fractures in the walls of veins and so the system is rejuvenated.

On average, there is 5 liters of blood in the body of a human weighing 132.3 pound. The heart can make this amount of blood circulate in the body easily within a minute. However, while running or exercising, this rate of circulation can increase to five times as high. Blood flows everywhere: from the roots of the hair to the toes, inside veins of varying sizes. The veins have been created of such a flawless structure that no clogging or sediments are formed. A variety of nutrients and heat are carried through this complex system.

Oxygen Carrier

The air that we breathe is the most crucial substance for our survival. The oxygen is as necessary for the cells' burning of sugars in energy production as it is for setting a log on fire. This is why oxygen has to be carried from the lungs to the cells. The blood circulatory system, resembling a complicated network of pipelines, serves this very purpose.

Hemoglobin molecules inside the red blood cells carry the oxygen. Each one of the disk-shaped red blood cells carries about three hundred million hemoglobin molecules. The red blood cells display a flawless working order. They not only carry the oxygen, but also release it wherever it is necessary, e.g. in a working muscle cell. Red blood cells deliver oxygen to tissues, carry the carbon dioxide, which is produced after the burning of sugar, back to the lungs and then leave it there. Following this, they again bind to oxygen and take it to the tissues.

A Pressure Balanced Fluid

Hemoglobin molecules also carry nitrogen monoxide (NO) gas in addition to oxygen. If this gas were not present in blood, its pressure would change constantly. Hemoglobin also regulates the amount of oxygen to be delivered to tissues by means of nitrogen monoxide. Amazingly, the source of this 'regulation" is nothing but a molecule, i.e. a mere collection of atoms that does not have a brain, eyes or conscious mind. Regulation of our bodies by a collection of atoms, of course, is a sign of the infinite wisdom of God Who created our bodies without flaws.