We only breathe oxygen because it's what our bodies need as we do not need to breathe other gases.
The air which we breathe in and breathe out is not pure oxygen or carbon dioxide respectively.
As we all knew that our body and the cells inside it require more oxygen to respire and to perform its regular functions and our environment does not provide us with an exclusive supply of oxygen.
Why do we inhale oxygen and exhale carbon dioxide?
The short answer is that you inhale oxygen because you need oxygen for some biological processes.
A fairly important one is the production of ATP, the energy all of our cells use.
In the process, electrons are used and oxygen has a high affinity for electrons.
Breathing pure oxygen or the wrong concentration of oxygen is dangerous.
However it's not dangerous to breathe the right amount of oxygen as we do it everyday without even thinking about it.
Oxygen can kill you if you breathe too much oxygen or breathe in too much oxygen.
We all breathe in oxygen naturally through the air but too much oxygen or the wrong concentration of oxygen can kill you or at least harm you.
Pure oxygen can be deadly.
This is because our blood has evolved to capture the oxygen we breathe in and bind it safely to the transport molecule called haemoglobin.
If you breathe air with a much higher than normal O2 concentration, the oxygen in the lungs overwhelms the blood's ability to carry it away.
Severe cases of oxygen toxicity can lead to cell damage and death.
Those at particular risk for oxygen toxicity include hyperbaric oxygen therapy patients, patients exposed to prolonged high levels of oxygen, premature infants, and underwater divers.
An oxygen level of 60 mmHg or lower indicates the need for supplemental oxygen.
Too much oxygen can be dangerous as well, and can damage the cells in your lungs.
Your oxygen level should not go above 110 mmHg.
Some people need oxygen therapy all the time, while others need it only occasionally or in certain situations.
Your body can't live without the oxygen you breathe in from the air.
But if you have lung disease or other medical conditions, you may not get enough of it.
That can leave you short of breath and cause problems with your heart, brain, and other parts of your body.
The medical definition of a low blood oxygen rate is any percentage below 90% oxygen saturation.
Oxygen saturation below 90% is very concerning and indicates an emergency.
Call 911 immediately if you or someone you know experiences such a low blood oxygen level.
Oxygen does vigorously support combustion (burning), but it is not flammable.
it simply doesn't explode.
It is certainly possible given the right circumstances that tanks of almost any gas could and did “explode” as the pressure in the tank increased with increasing temperature.