What is bone marrow? What is its main function?
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Bone marrow is a spongy substance found in the center of the bones. It manufactures bone marrow stem cells and other substances, which in turn produce blood cells. Each type of blood cell made by the bone marrow has an important job. Red blood cells carry oxygen to tissues in the body.
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Bone marrow is a soft and present in the hollow bones.
Explanation:
The bone marrow consist of blood capilaries and here the exchange of salts, amino acids, fats, glucose takes place through haemoglobin
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