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Humans require a constant supply of oxygen for cellular respiration, a process where cells break down glucose to produce energy. Oxygen is needed to help convert glucose into usable energy molecules called ATP. Without oxygen, cells would not be able to generate enough ATP to sustain life.
It contains the volume of oxygen needed to supply the victim with rescue breaths of 100% oxygen.
Physical fitness
If the body cannot supply enough oxygen to break down glucose, it will switch to anaerobic respiration, producing lactic acid as a byproduct. This can lead to muscle fatigue, cramps, and a buildup of lactic acid in the muscles, causing discomfort and potentially impacting performance.
A rocket engine carries its own supply of oxidizer, which provides the oxygen needed for combustion to occur. This allows rockets to operate in the vacuum of space where there is no external source of oxygen.
Lungs supply air, oxygen, to the body. Therefore, when the organs do not get enough oxygen, the do not function efficiently.
There isn't enough food produced where it's needed.
Yes
yes
The heart uses about 20% of the body's total oxygen supply. It requires a constant supply of oxygen to function properly and sustain the body's energy needs. If the heart does not receive enough oxygen, it can lead to serious health issues such as heart attacks.
Inability of the body to supply enough oxygen to meet the tissue requirement.