A right femur of an adult, about 45 cm long, seen from the front: the longest bone in the body. Cut it open to see compact and spongy bone and the marrow. Drag to rotate, scroll to zoom.
Sectionwholedeep cut
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Procedural model from typical adult dimensions, not traced from one person. The close-up shows a block of compact bone about 1.5 mm across, drawn about 70 times life size.