2007-06-23 01:06:01 · 18 answers · asked by elflaeda 7 in Entertainment & Music ➔ Polls & Surveys
Not totally sure, but I'm pretty sure I heard somewhere that brain cells are not created. You are born with hundreds of billions of brain cells, which die as you live your life. Collisions in life, for example when playing rugby would affect the number of brain cells (however a stereotype does suggest that rugby players are smart). A lot of boxers, no offense, tend to be quite... stupid (had to use that word :) due to the number of brain cells lost.
Also, you know how elderly people tend to be slower at thinking, and have poorer memory? thats possibly due to the loss of brain cells over the many years.
I'm not totally sure about the above information: just a sensible guess (just like most of my answers ;)
2007-06-23 01:12:40 · answer #1 · answered by Anonymous · 0⤊ 0⤋
You also probably know that most cells live in water. Cells need and extract oxygen and nutrition from that water and excrete waste into that water. In complex animals cells become differentiated and take on specialized functions now reside in organ systems which work to support the organism. Their growth rate is controlled by the internal clockwork of the genetic code and external factors which limits their numbers to the necessary amount to keep the organ system functioning. Here is a website on cells that go more into it. It also tells about brain tumors: http://www.braintumorfoundation.org/tumors/primer.htm
Dead cells are never replaced. That is why there are people who are trying the brainstem cell research. They believe and have done studies on how fetus cells can be placed in a brain and help with people who have strokes or spinal cord injury. There is acontroversy on this issue.
2007-06-23 01:14:17 · answer #2 · answered by Stephanie F 7 · 0⤊ 1⤋
I know they used to say that brain cells were never replaced and you had the same ones all your life. I also remember that in the last few years they found out that they are replaced but I can't remember how long it is. It is probably around ten years though.
2007-06-23 01:11:27 · answer #3 · answered by Jerard 2 · 0⤊ 0⤋
Brain cells do not multiply and they are never replaced. Once brain cells die, they are gone forever. It is possible in some cases to have other cells take over or form more connections around dead or damaged brain cells, but they do not regrow new cells.
2007-06-23 01:08:31 · answer #4 · answered by Anonymous · 0⤊ 0⤋
well to tell you frankly they can't never be replaced. that is why when a persons who recover from strokes are in the state of what they call VEGGIES. for the reasons that they loose oxygen in their brain and oxygen as we all know is very essential for the work to brain thus destroying their brain cells affecting speech, mobility and so on or better yet known as paralysis. If only brain cells can reproduce so called VEGGIE people can again walk despite of their previous condition.
2007-06-23 01:20:42 · answer #5 · answered by Kweng 4 · 0⤊ 1⤋
I don't know but this is what I heard, that when you're a child you keep renewing, and when you turn adult, you stop regenerating brain cells.
2007-06-23 01:08:38 · answer #6 · answered by junkmailfanatic 1 · 0⤊ 0⤋
Never.
Brain cells are the only cells that never regenerate.
2007-06-23 01:08:35 · answer #7 · answered by Anonymous · 0⤊ 0⤋
They're not.
They are the only cells in the body that aren't replaced when they die.
http://en.wikipedia.org/wiki/Brain_cells
2007-06-23 01:08:29 · answer #8 · answered by Anonymous · 1⤊ 0⤋
Mine are wasting a way fast so by the end of the year i will have none because they never recover !!
2007-06-23 01:27:45 · answer #9 · answered by Anonymous · 0⤊ 0⤋
never, brain cells do not regenerate. once it's dead it's gone forever.
2007-06-23 01:08:34 · answer #10 · answered by Alan 2 · 1⤊ 0⤋