how does the human body produce blood?

Question

how does the human body produce new blood?

you know if you lose blood in a nose bleed, or a scraped knee, paper cut etc,
your body will obviously have less blood in it than it did before. . .well how does the body replace this with new blood? were does this blood come from?
as far as im aware blood is water and iron, were does the body take this water and iron from to form new replacement blood cells?

Nini · Accepted Answer

RBC - thru haematopoiesis. this is occurring at all times in ur body
WBC, platelets - in bone marrow but from different cells
Plasma - water from inside cells move out to replace the lost plasma

Water and iron are mainly from ur diet. but ur body will have a store of both at all times

But u have to rmb tt nose bleed and all tt don't cause a big blood loss as u think... the body won't exactly feel the loss.

Anonymous · Answer

Yes, this why the human body is incredible. Your body will sense the slightest decrease in blood volume and will stimulate the bone marrow to generate more red blood cells. Just provide it the adequate sleep, nutrition and hydration and it will take care of the rest.

David · Answer

blood cells are formed in bone marrow in the long bones of the body femur for example

Smeghead · Answer

"as far as im aware blood is water and iron"

Um.  No.  There's a lot more to it than that.

Anonymous · Answer

actually blood is not renewed it is the RBCs, WBCs ,platelets and other plasma proteins which constitute blood and are produced by the pluripotent cells of our body(bone marrow,liver,spleen)..

? · Answer

The bone marrow, in a process called hematopoiesis. http://en.wikipedia.org/wiki/Hematopoiesis

Anonymous · Answer

by your heart when it pumps all around the body

? · Answer

probably in the bones. so it doesnt matter how fat you are... its how big your bones are.

Beastly Death · Answer

from girls periods =)

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how does the human body produce blood?

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