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The osteon is the primary structure that makes up the hard outer layer of bones, which is generally known as â cortical bone .â Cortical bone, or compact bone, is dense, mature bone found in vertebrates such as mammals, amphibians, reptiles, and birds. It is this dense hard layer that gives a person or animal strength.
their purpose also provides strength to the bones. 3. How does the structure of an osteon contribute to the overall strength and health of bone? This preview has intentionally blurred sections. Sign up to view the full version.