If regulation of our breathing were left up to us we would probably die of asphyxiation from forgetting to breathe, falling asleep or being preoccupied with other activities.
For every human being, this crucial process is regulated by the respiratory center, which is the size of a lentil bean and is located in the brain stem (an extension of the brain). It is made up of three different groups of neurons.
The first group determines the basic rhythm of breathing and gives the lungs and the chest the signal to inhale air. In this way, we breathe in the air we need.
The second group of cells determines the speed and pattern of our breathing. When this second group comes into play, however, the cells signal to the first group to halt their activity. This controls the air capacity of our lungs, and our breathing speeds up.
The third group, on the other hand, is not normally active. They come into play when a high rate of breathing is needed and they ensure that the abdominal muscles participate by sending them signals.
Is all of this enough to keep us alive? No.
Respiration is also controlled chemically. Breathing's aim is to maintain the correct balance of oxygen and carbon dioxide in our blood. Any change in this balance activates a group of cells in the respiratory center, bringing the levels back to normal with very sensitive adjustments.
But the amount of oxygen in the blood has no direct effect on the respiratory center. In that case, how does the respiratory center become aware of the change in oxygen level in the blood?
At this point, another group of cells comes into action, displaying a miraculous consciousness. In large veins outside of the brain, such as the jugular, highly sensitive receptors send signals to the respiratory center when the blood oxygen level falls below a certain level. In this way, respiration is regulated with very finely tuned adjustments.
How can a group of cells know how much oxygen is needed for the body to stay alive?
How can these cells have used such a mechanism, which has been in place from the first human until now, when only in the last 20 years has science discovered this mechanism?
Moreover, this mechanism is so sensitive that for the entire duration of our lives, no mistake is ever made when sitting, running or sleeping. It ensures that at every second, vital oxygen is carried to the 100 trillion other cells in our body, and that harmful waste products like carbon dioxide and hydrogen ions are speedily removed.
Even though they know the truth, some scientists, fanatically committed to the theory of evolution because of their obsession with materialism, claim that this perfection came about as a result of blind coincidence. Whereas the Creator of this perfect order is clearly the Possessor of infinite intelligence—that is, God.
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