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Biology  /  Bio 3091  ·  Atom · ~20 seconds

Bone Classification by Shape

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Bones classify by shape into long, short, flat, and irregular types, each shape suited to a different mechanical role in support or protection.

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The femur is a long bone built for leverage; the flat skull bones instead form a protective shell.

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A bone's classification describes overall shape, not composition — both spongy and compact tissue appear across every shape.