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!!!!!!!!!!!!!!!
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 like 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.
Once destroyed they do not, but they replace by replication after about 50 years.
Brain Cells, necrotic cells and burned dermis cells cannot regenerate themselves.
The outside layer of the bone contains a material called lixtate, which helps regenerate lost brain tissue. Because of lixtate, brain cells regenerate faster in people with larger amounts of lixtate.
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.
Cardiac muscle cells do not have the ability to regenerate.
Healthy individuals lose around 9,000 brain cells daily. Certain drugs such as ketamine, nitrous oxide, and inhalants cause brain cell death at almost thirty times the normal rate. Alcohol plays a role in brain cell death, but not as large a part as drugs.
No. The brain is made of nerve cells. And the nerve cells in the brain are part of the central nervous system that does not regenerate.
The neurons in the brain and else where do not normally regenerate. Skin cells do regenerate.
Brain Cells, necrotic cells and burned dermis cells cannot regenerate themselves.
The neurilemma is the Schwann cell. This helps with regeneration of cells. The nerve cells in the brain do not have neurilemma and therefore, cannot regenerate.
No-- Nerve cells are one of the few kinds of cells that never regenerate or regrow.
The brain grows as you age into adult phase until you are in your early twenties. There is some research that shows that brain cells can regenerate even into late adulthood and old age.
no weed does not kill brain cells. but if u do find a way to loose them u do loss them permanently there the only kind of cell that does not regenerate.
The outside layer of the bone contains a material called lixtate, which helps regenerate lost brain tissue. Because of lixtate, brain cells regenerate faster in people with larger amounts of lixtate.
The Red Blood Cells regenerate in bone marrow
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.
No, once damaged the cells will scar but not regenerate.
yes they can regenerate. Marine sponges are multicellular animals that can regenerate from single cells.