All living things must have oxygen to live. Through the breathing
process, the lungs draw oxygen from the air and put it into the
blood. The heart then pumps the blood through the body to be used
by the living cells which require a constant supply of oxygen.
Some cells are more dependent on a constant supply of oxygen than
others. Cells of the brain may die within 4 to 6 minutes without
oxygen. Once these cells die, they are lost forever since they
DO NOT regenerate. This could result in permanent brain damage,
paralysis, or death.
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