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The ends of our long bones fit into joints. These joints are lined with cartilage (the flexible tissue that makes up your ears and nose), because cartilage is smoother than bone, and allows the joint to move better

But cartilage isn't as strong as bone. By having a larger surface area at the bone end, the stresses on the cartilage are spread out over a greater area. (think of how it would take much less force to break the skin with a pin than with a pencil).

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Wiki User

12y ago
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AMIRAH IMTIAZ

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3y ago

it's both

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AMIRAH IMTIAZ

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3y ago
i think

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Anonymous

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3y ago

because there is something

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Q: Why are bones wider at the end and skinnier in the middle?
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