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Only a few minutes, that is why stroke causes serious damage.

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16y ago

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Death of brain cells due to lack of oxygen?

Brain cells can only survive for 3 minutes without a supply of oxygen.


How red blood cells survive without nucleus?

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How do grasshoppers survive without respiratory pigments in their blood?

because it`s tracheas bring O2 to cells


How do blood vessels help cancer cells to multiply?

Without oxygen and nutrients, the cell will die. So it needs to grow it's own blood supply to survive. This is called angiogenesis. The cancer cells may be able to stimulate normal cells to produce angiogenic factors to help produce new blood vessels. Scientists researching how tumours grow think that a cancer can't grow much bigger than a pin head before it needs to develop its own blood supply.


Why can epithelial cells survive without blood vessels?

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Oxygen to the heart.


Why does the skeleton produce blood cells?

because if you do not have red blood cells you can not survive because red blood cellsprotect you from diseaes


Why is it important to have blood cells?

Only if they multiply , do we survive.


Why is a blood supply to the cells in the heart essential?

If the blood supply to the heart muscles is blocked, a heart attack is likely.


What blood vessels supply skin cells?

capillaries


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