(Description) Figure 9 (a) Diagram and (b) photograph of a partially sectioned long bone (femur), showing its internal structure. Erythrocytes and leukocytes are produced from stem cells located primarily in the red marrow. Yellow marrow produces factors (cytokines) that promote the development of the blood cells (Tortora and Grabowski, 1993).

Week 3: Tissue structure and function

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This shows a diagram and photograph of a partially sectioned long bone (femur), showing its internal structure.