The brain can survive without oxygen for about 3 minutes before it is permanently damaged. After 3 minutes there is likely to be severe brain damge which usually leads to a coma. If you survive the coma you will probably have very limited brain function i.e. not being able to walk or talk. After 10 minutes, (without special measures such as freezing) the brain will most likely be dead.
As a general rule, permanent damage is likely if the brain is more than 3-4 minutes without oxygen. 10 minutes is almost certain to cause lasting damage and in the majority of cases would result in death. This is one reason why it is vital to begin CPR on anyone whose heart has stopped beating (cardiac arrest) as soon as possible. This involves chest compressions over the heart (right in the middle of the chest, roughly between the two nipples) - 30 in 20 seconds - followed by 2 rescue breaths and then immediately continuing chest compressions. An ambulance should be called immediately when anyone collapses, regardless of whether their heart has stopped.
unconsciousness
if oxygen resumes, there may or may not be brain damage; if oxygen flow does NOT resume, death follows
death obiously
Ya die.
You are for sure dead. The average human can go 3 minutes without air, anything after that can cause permanent brain damage or death.
12 Minutes.
If the brain was without oxygen for 4 to 6 minutes can caused brain dead. Early CPR is needed to prevent brain damage or hypoxia.
There are a lot of variables, but 4 minutes is the usual guideline. Blood carries oxygen, and blood is pumped by the heart. Brain damage occurs after 4 minutes without fresh oxygen to the brain.
it can cause brain damage
This depends on a few more variables not given but a person will stay conscious for 3-5 minutes. After that, and assuming someone gets oxygen to them they will be resuscitated for another 5 minutes or so before permanent brain damage and death ensue.
Typically, 3-4 minutes, although there have been RARE cases of persons with VERY low body temperatures that have gone much longer than that.
If the cardiovascular system fails, oxygen ceases reaching the body cells, most notably the brain cells. Without fresh oxygen reaching the brain, cells begin to die. In four minutes, imminent death is irreversible, or at the very least irreversible without permanent brain damage.
3-4 minutes.
Without oxygen the brain loses consciousness in a few seconds. 6-8 minutes and you've got permanent brain damage, but it wouldn't matter because in a vacuum the lack of pressure would cause your blood to boil, killing you instantly.
either your heart because with out it the blood has no oxygen and so cells cannot respire or the brain because if you go without oxygen it can cause permanent brain damage. so probably the heart because without oxygen you'll die.
The average adult can survive without oxygen for up to about five to ten minutes depending on the condition that they are in.