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How many cells in the human body?

The number of cells in the human body is about 100.000.000.000.000 (100 trillion , or 10to 14). Most of them short-lived (1-2 days) are cells of the intestinal epithelium. Daily kill nearly 70 billion of these cells. Examples of other short-lived cells are red blood cells - their daily kill nearly 2 billion. However, there are some cells (e.g. neurons, the cells of skeletal muscle fibres), the lifetime of which corresponds to the life of the organism.

Interestingly, when we are born in the brain already has about 14 billion cells. And this number is not incremented until his death. Moreover, once the person turns 25 years, every day there is a reduction in the number of brain cells per 100 thousand.


 


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Total votes: 176

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x4510
2013-08-20 08:34:11
The cells of the body are updated. Even the brain and skeleton.
Cm. the work of Joseph Altman on neurogenesis.
Andersonin
2013-06-03 15:01:14
Nonsense! In the adult human brain is about 86 billion cells
Miras
2013-05-12 21:45:23
Not afraid! Nerve cells are restored!
Alexander
2013-03-06 11:56:02
And given the constant stress, the environment, poor nutrition - the result will be much darker. Conclusion-it is necessary to take drugs allows you to slow the aging process, and such drugs exist. The whole world already uses them, there is no other way
Anonymous
2013-02-17 14:43:16
how many genes in a single cell?
Vova
2013-02-10 15:02:25
Nightmare!! Every day die a hundred tysiaclecia... It's 400 years, not one cell in my head will not stay.
Kramnik
2012-03-04 11:52:25
Cool!:-) information good.
Tanya
2011-05-29 10:55:42
good information

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