Arm and leg bones

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Q1: Which are the thicker bones – those in your legs or your arms?

[Answer]
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The arms, legs, fingers and toes are made up of long bones with knobbly ends.

Some other bones fit inside cup-shaped sockets – this is why you can move your upper leg in so many directions.

In between some groups of bones – in places like your wrist – are pebble-shaped bones. These also give you lots of movement.