The presence of air in the bloodstream, known as air embolism, can be lethal even in small amounts. Typically, an air bubble larger than 0.5 to 1 milliliter can cause significant harm, particularly if it enters the heart or brain, leading to serious complications like stroke or cardiac arrest. The exact lethal volume can vary based on individual physiology and the location of the embolism, but prompt medical intervention is crucial to mitigate the risks.
Air rifles can push a lead pellet at or close to the speed of sound. Yes they are lethal, and very accurate.
It is highly dangerous and not recommended to inject any amount of air into your bloodstream through an IV needle. Even a small amount of air can cause an air embolism, which is a serious and potentially fatal condition. If you suspect air has entered your bloodstream, seek immediate medical help.
The process of exchanging gases with the bloodstream is called respiration. In the lungs, oxygen from the air we breathe diffuses into the bloodstream while carbon dioxide from the bloodstream diffuses into the air in our lungs to be exhaled.
The tiny air sacs are called alveoli. Oxygen from the air enters the bloodstream through the walls of the alveoli, while carbon dioxide from the bloodstream is released into the air sacs to be exhaled.
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The organ that supplies a human's bloodstream with oxygen from the air is the lungs. When we inhale, air enters the lungs, and oxygen from the air diffuses into the bloodstream through the alveoli, tiny air sacs where gas exchange occurs. This oxygen-rich blood is then circulated throughout the body to supply tissues and organs.
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The Nasal Cavity
form of oxyhemoglobin
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