In most circumstances, 3 minutes without oxygen would result in severe brain damage. Living without oxygen for an hour or longer could potentially kill you.
Oxygen is required for many processes within the body. It is a product of cellular respiration and can only be produced by plants through the process of photosynthesis. Without oxygen, our bodies would quickly die from all forms of cellular damage- especially since cells are the building blocks of life.
However, some organisms have been found to survive without oxygen for short periods of time. These organisms use alternative energy sources during times of need. They include anaerobic bacteria that produce energy using other compounds such as sugar and proteins; this allows them to live in environments without oxygen for extended periods of time.
An example of an organism that lives without oxygen for extended periods of time is the bacterium Methanococcus jannaschii. This organism uses methane instead of oxygen to produce its energy needs during times of low oxygen availability. The organism was first discovered in 2004 and is known to be able to live without oxygen for several days at a time.
Another example is the fungus Phanerochaete chrysosporium.
When a person is unconscious and not breathing, time is critical. Without oxygen, permanent brain damage occurs after only 4 minutes, and death can occur as quickly as 4 to 6 minutes later. When a person is conscious but not breathing, time is also critical. A heart attack can happen any time after the first minute of no breath-ing.
While most people will survive for several minutes without breathing, only a few hours are spent alive in this condition. The majority of time spent dead (an estimated 7.5 million people worldwide) is not due to diseases that kill rapidly, but rather to slow deaths caused by malnutrition, poverty, war, and human rights violations.
When you stop breathing, you lose consciousness within six minutes and die within an hour if someone doesn't call for help. But there are ways to keep breathing even when there's no hope of recovery-ways that can buy more time for those who want it very much. These methods include chest compressions, electrical shocks, and medications.
The most common way to stay alive when you can't breathe is with mechanical assistance. Machines can replace the work of your lungs so they can have time to recover while you live on artificial life support. There are two types of mechanical ventilation: continuous positive airway pressure (CPAP) and assisted ventilator breathing (AVB).
Brain cells are extremely susceptible to oxygen deprivation. Some brain cells begin to die less than 5 minutes after their oxygen supply is cut off. As a result, cerebral hypoxia can cause serious brain damage or death in a matter of minutes. Survivors often have permanent neurological problems.
How does this affect meditation? Meditation uses the breath as an object for attention and awareness. It's easy to think about something else when breathing in and out. So, if you're thinking about something else during your meditation, you've lost focus. You may want to try again later when you have better control of your mind.
When breathing in and out, we usually pay attention to our breath going in and out of our body through our nose. However, we also use our abdomen as well as our chest when breathing. The stomach expands when we breathe in and contracts when we breathe out. This movement of air into and out of the stomach is called diaphragmatic breathing. Diaphragmatic breathing helps reduce stress because it makes us feel more alive and engaged with the world around us.
However, some people might have trouble doing this because they either don't know how to do it or it feels weird for them to expand their stomach while breathing in.
Oxygen is necessary for life; without it, significant brain damage can occur in as little as three minutes. As a result, doctors commonly treat injuries such as heart attacks or strokes by increasing sufferers' oxygen levels. However, mounting data shows that using too much of the gas during resuscitation may be detrimental. High concentrations of oxygen can lead to oxidative stress and organ damage.
Different organs and tissues can withstand a lack of oxygen for varying amounts of time; the brain is the most quickly and irreversibly affected. During this time, your body is undergoing cellular death with no way to repair itself. As soon as the oxygen supply is restored, however, all tissue will try to heal itself.
The organs least affected by oxygen deprivation are those that can switch over to anaerobic metabolism (such as muscle tissue) or that have a high concentration of antioxidants (such as eyes and skin). The brain has no choice but to rely on aerobic metabolism, which makes it more susceptible to damage from oxygen deprivation. However, if you survive longer than ten minutes without oxygen, you'll enter a state known as cerebral hypoxia, which is much less damaging than actual oxygen deprivation.
In practice, this means that if you were to lose consciousness today without anyone around to help you breathe properly, you would probably die within a few hours. But if you were to suffer a heart attack then collapse from excessive fatigue, your body would still be able to resist the lack of oxygen for several days until help arrived.
The answer to your question "what organ can live the longest without oxygen?" is actually brain tissue.
How long can a newborn go without oxygen before he or she suffers brain damage? The effects of oxygen deprivation will differ depending on the infant. However, it is predicted that brain damage will begin after around 10 minutes of no oxygen and that death would occur if the newborn is entirely devoid of oxygen for 25 minutes. Newborns can survive longer than this if they are given more time on oxygen.
After birth, the body's main task is to restore and maintain oxygen homeostasis. For this reason, most infants can withstand periods of anoxia (lack of oxygen) after birth. However, prolonged anoxia can cause irreversible brain damage within a few hours of being deprived of oxygen. Even when blood flow returns and oxygen is restored, any previous injury may have been done by the brain itself while trying to protect itself from further damage. This means that even though you might survive with mild hypoxic-ischemic encephalopathy (HIE), you could still suffer long-term neurological problems such as cerebral palsy or mental retardation. HIE is especially dangerous if it occurs in premature babies because many are not able to compensate for it at all or cannot do so successfully.
Generally speaking, the younger your baby, the less time it can spend without oxygen after birth. Full-term babies can usually endure up to two minutes of anoxia after birth before needing fresh air.
Brain cells die when there is a shortage of oxygen in the brain, which increases the probability of brain injury or death. The two main ways this happens are through internal bleeding or through damage to the brain caused by the absence of oxygen.
The brain is very sensitive to lack of oxygen, which can cause serious problems if the body is not given enough time to repair them. These problems include coma and death.
Blood vessels carrying blood to the brain constrict when exposed to carbon monoxide (CO) for prolonged periods of time. This may be the cause of carboxyhemoglobin (COHb) levels above 10% in people who have been inside a vehicle with an engine that had been running for some time.
Carbon monoxide binds to hemoglobin in red blood cells, changing its color from red to brownish-red. Carboxyhemoglobin also has increased blood viscosity, which may lead to reduced blood flow in certain areas of the brain.
People who work with fuels other than oil or natural gas may be exposed to high levels of carbon monoxide. For example, miners working in coal mines are at risk of exposure to CO.