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प्रश्न
Bones are hard structures and cannot be bent. But, we can still bend our elbow, knee, etc. How is this possible?
उत्तर
A single bone can not be bent from any of its parts but if two bones are joined to each other through a joint then we may be able to move that set of bones accordingly. Such as the hinge joint, pivotal joint, ball and socket joint, and the pelvic joint.
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