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In a long bone, such as the femur in the leg, the center of the bone contains which substance, responsible for producing blood cells?Question options:A) PlasmaB) LigamentsC) Synovial fluidD) Marrow

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The correct answer is D Marrow. Marrow is a tissue located inside the femur. Among its functions, is the production of blood cells.

User Kevin Hsu
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