The central portion of the shaft containing stem cells that produce blood cells is called?

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Multiple Choice

The central portion of the shaft containing stem cells that produce blood cells is called?

Explanation:
The central hollow of the long bone is the marrow cavity, also called the medullary cavity. This space houses bone marrow, which contains hematopoietic stem cells responsible for producing the body's blood cells. In adulthood, marrow content is often yellow fat, but red marrow—where hematopoiesis occurs—remains in certain bones. The outer covering is the periosteum, and the lining inside the bone surfaces, including the marrow cavity, is the endosteum. Spongy bone refers to the porous cancellous tissue inside ends of bones and in some flat bones, not the central cavity where blood cell formation happens.

The central hollow of the long bone is the marrow cavity, also called the medullary cavity. This space houses bone marrow, which contains hematopoietic stem cells responsible for producing the body's blood cells. In adulthood, marrow content is often yellow fat, but red marrow—where hematopoiesis occurs—remains in certain bones. The outer covering is the periosteum, and the lining inside the bone surfaces, including the marrow cavity, is the endosteum. Spongy bone refers to the porous cancellous tissue inside ends of bones and in some flat bones, not the central cavity where blood cell formation happens.

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