Question

when a person gets shot in the head why does he die immediately? is the whole of the brain(all section of it) are that vital ?

Answer 1

i mean shouldn't he feel pain for a little bit, cry out, scream a little and then die. i do know certain cases where people have stuff right in their brain and they still live.

Answer 2

First of all you wouldn't feel pain because there are no nerve endings in the brain.

For the instant death part: it depends on which area of the brain you get shot.
Some parts of the brain are so vital to self awareness and maintaining consciousness that once you blast a hole through it there's no way your mind can process the fact you've just been shot in the head. Your body might take an extra minute to completely cease activity, but you won't be able to feel any of it. So from that point of view it's instants death.

If for example you get shot in some specific areas in the frontal lobe you could survive and live normally after it, but you would need a hell lot of luck not hitting the wrong spot.

Answer 3

The bullet with your name on it slides past hair, skin and muscle before it smashes into one of eight cranial bones engineered to keep your brain safe. Unfortunately, it's too late for that now. Bullets beat bones. The projectile's entrance into your skull makes easy shrapnel of your calcium, phosphorus, sodium, and collagen case. As a souvenir of the opening, you gain a circular hole rimmed with abraded skin. Distance matters, too: The closer you are to the bullet, the more the gun's smoke and powder could burn your flesh.

But enough about the blemish; the real work happens deeper. The connective tissue and fibrous membranes that act as internal cushioning are split open just before the bullet dives into your cerebrospinal fluid. This fluid serves as a shock absorber. It, with some other structures, allows you to ride roller coasters and join mosh pits without injury. But again, because your 3.4-pound control system is being taken out, this will be your last head bang.

The bullet travels through your brain faster than the speed at which your tissues tear. This means that it's actually pushing tissues out of the way, stretching them beyond their breaking points. When high velocity long arms are responsible, bullets traveling at thousands of feet per second will exit your body before your tissues have a chance to rip.

The ability to process information and solve problems? All gone when the bullet shoves its way through your prefrontal cortex. Your ability to index memories? Gone with your hippocampus. In the bullet's wake, a long temporary cavity is left. When the tearing finally does happen, your tissues will snap back toward the initial opening and overshoot their original position. You know that back and forth thing that happens when you kick one of those springy door stops? Well that's what your tissues do when the shock waves kick them.

Then the passage collapses. The high-speed firearm that produced the bullet created a disruption in your brain 10 times its diameter.

But you're lucky, relatively speaking. If you were shot in the heart, your blood pressure would quickly drop, but it would take 10 to 15 seconds to lose brain function. In that time you could draw your gun, utter last words, or spend some time thinking about your unfortunate situation. But a shot to the brain is different. Your brain stops functioning almost immediately. In just a fraction of a second, you're gone.

Answer 4

i believe heart works without the brain signals, right?