it was removed through their nostrils
The brain is logically the person. If the brain is removed from the body, the person is dead, but if the brain is placed back and all the nerves and veins and other essences are attached, maybe the brain can function. But, the brain is usually dead, then the body is dead.
Sadly while their body can continue to go on with the help of machines, their mind, their personality, and all other parts of them mentally are already gone. Once a doctor has pronounced a person brain dead he is sure of his findings and this is something that cannot be reversed. There is no blood flow in their brain and their brain does not react in any way to stimulation. A quick way to see if someone may be brain dead is shining light into their eyes; a person who is truly brain dead does not have a pupil response. Eventually this person who is brain dead is let off of machines which keep their body alive and their body dies as well. Hopefully, if the person is able to give organ donations they do so, because they could be saving other's lives.
A person can continue breathing with very little of the brain remaining. If the entire brain is removed, the person dies.
P6 - Declared brain-dead patient whose organs are being removed for donor purposes
Brain dead person can produce tears, if his reflex arc related to tears is intact. Anything irritating to eyes will produce the tears in the eyes of such person.
NO
Do an EEG and check for brain activity.
Yes, if you want to keep the body from deteriorating a brain dead person still needs nutrition.
No. You are dead. In some cases life does exist but the brain is dead and the person is on a machine.
This is because being dead is defined as stoppage in the functioning of brain and it is not having any relation with the functioning of heart. If the heart stops beating then there is no supply of oxygen rich blood to the brain and hence the brain dies and henceforth the person is declared dead.
This means the person has no heartbeat and no brain activity. The person is dead.
The brain is the computer for the body. A person can not live without a brain because it regulates the heart and all the body functions. Hence, the term brain dead means the body is dead.