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Red and white blood cells

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Q: What are formed in the bone marrow and the spleen?
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Where red blood cells are made?

Red blood cell are made in the red bone marrow.


What system of the body produces blood?

Bone marrow in an adult, bone marrow and spleen in an infant, spleen and liver in a fetus.


Why do blood cells die?

Because the wear out and need to be replaced by new ones formed in the spleen and bone marrow.


A substance that forms red blood cells and word parts?

RBC are formed from the red bone marrow,liver and spleen.


True or false when erythrocytes are no longer useful they are destroyed by macrophages in the spleen liver and bone marrow?

True. When erythrocytes are no longer useful they are destroyed by macrophages in the spleen liver and bone marrow.


Where are red blood cells made and destroyed?

Made in bone marrow and destroyed in the spleen


Where do B cells produced in the bone marrow mature?

Immature B cells derived from the bone marrow migrate to the spleen where they can differentiate into mature B cells.


The main sites of blood cell production in adults are the spleen and the liver?

No. Blood cells are formed in the bone marrow, especially the large bones (femur, pelvis).


Red blood cells are produced in?

In the spleen of babies and the bone marrow of children and adults


Where are bone marrows formed?

You find bone marrow in the middle of your bones. Marrow is made of spongy cells.


Where is blood formed?

blood cells are formed in bone marrow.


Blood cells are formed in the?

Bone marrow