Importance of Pulse Oximeter

Oxygen is very essential to human life. Without it, a human being will only need a few minutes before he dies. Once we breathe in, we take in oxygen inside our body then goes straight into our lungs and it will be passed on through our bloodstreams. The oxygen travels inside our body through the hemoglobin through all our blood vessels, and then reaches the small air sacs found inside the blood vessels called the alveoli. Then the oxygenated blood will reach the heart which will pump the blood http://bit.ly/lmizlA