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Every cell in the human body is replaced and renewed within a period of seven years, consecutively, for life. This is known as aging; it includes the brain. Not one cell a person is born with is still there when they reach seven, and again at fourteen, then again at twenty-one, etc. The cells are replaced, respectively, and you are a "brand new" person, however, with the same DNA structure and personality you were born with.
Memory cells can be "recycled" as some information is lost over time.
Sleep repairs and reorganizes the brain; as for new brain cell development, research shows that as one educates their mind new cells form as often as the mind is actively engaged.
EDIT - MijinLaw: The 7-year cycle is a myth. And although neurons can be generated in some circumstances, it's still unclear whether neurogenesis plays any significant role in normal learning.
Plus! Heart muscle cells aren't replaced, that's why heart attacks can be fatal, as the muscle cells which are destroyed are not replaced and may not be enough to keep the heart going. There arnt!!!!!!!!!!!!!!!
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Once destroyed they do not, but they replace by replication after about 50 years.
the answer is yes damaged brain cells can be replaced. The brain's ability to act and react in ever-changing ways is known, in the scientific community, as "neuroplasti…city." This special characteristic allows the brain's estimated 100 billion nerve cells, also called neurons (aka "gray matter"), to constantly lay down new pathways for neural communication and to rearrange existing ones throughout life, thereby aiding the processes of learning, memory, and adaptation through experience. Neuroplasticity is the saving grace of the damaged or disabled brain; without it, lost functions could never be regained, nor could disabled processes ever hope to be improved. Plasticity allows the brain to rebuild the connections that, because of trauma, disease, or genetic misfortune, have resulted in decreased abilities. It also allows us to compensate for irreparably damaged or dysfunctional neural pathways by strengthening or rerouting our remaining ones.
Brain cells are the only, if not one of the few, cells that are supposed to stay in your body for your entire life so they do not get replaced. Actually, research over the l…ast few years has shown that the human brain can grow new brain cells. Particularly the ones used in cognitive memory and learning capability.
Nerve cells are in G0, which means the cells are in developmental arrest. They do not divide or grow, they stay the same and don't regenerate.
every six to 14 days u should have learned this in 7th grade
Contrary to common myth, alcohol doesn't destroy brain cells.
Brain cells are not replaced This is NOT true. At one time, which means there still are, people who claimed to be 'experts' believed the brain cells were not replaced, but l…ike all self proclaimed experts, they were wrong. Current science has proven beyond any rational doubt that brain cells are replaced in healthy people who have a normal diet, just like every other cell in every other living thing that exists. NOTE: However, if your diet consists mainly of chips, coffee, and Scotch (or anything similar), they are not. In fact, nothing in your body can be fixed or replaced, which is why some 'students' get stupider instead of smarter at school.
The entire human skeleton is replaced every ten years. Seven to ten percent of this skeleton is replaced once a year.
cells usually replace themselves after you are born. Cells change each time we grow and some stay the same.
Yes the brain can replace dead brain cells the theory that weed kills brain cells is bogus if you don't believe me watch the movie called The Union
It is replaced four times a day.
there are some cells in the body that after the are produced once, they can no longer reproduce. These cells are known as cells in the quiescent stage. They are permanantly in… G0 phase.
Almost never. Replacement does happen but is so slow it was thought to not happen at all until research in recent years showed it does happen. This is why brain injuries h…eal so slowly compared to injuries elsewhere (and most healing of brain injuries is usually by moving the function to an undamaged area and relearning, not by direct cell replacement).