Doctors can probably keep a person alive by
giving them lots of blood, especially if the
person is in a hospital, so there is blood close
Where would you get all the blood to keep
the badly injured person alive?
Blood comes from blood donors who give a pint
of blood at one time. An average person has 10
pints of blood = 5 quarts of blood. A newborn
baby has only a half pint!
We also have differences in our blood, so blood
from you would probably be bad for me, and vice
versa. We have blood types A, AB, B, and O, and
we have, or don't have, something called the Rh
factor, so we're all either Rh Positive or Rh
Negative. My blood is A+, so B blood or AB blood
would be bad for me.
Donated blood is stored in a blood bank, and
it's used for all the people who need blood.
This website tells about how much blood a
person can lose:
how much blood can human body lose
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