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Muscles are made up by thousands of fibbers that can contract

As muscles contract then relax they move the bones and limbs at the joint

Muscles also work in pairs

When one muscle contract the other muscle controls the opposite action will need to relax

Muscles are made up by thousands of fibers that can contact

As muscles contact then relax they move the bones and limbs at the joint

Muscles also work in pairs

When one muscle contract the other muscle controls the opposite action will need to relax

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13y ago
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11y ago

impulses are sent to muscles at joints which causes them to contract, when these muscles contract, as they are connected to bones, they pull on the bone which causes movement. e.g. an impulse is sent to your bicep causing it to contract, this then pulls on the top of your forearm bones bending your arm

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11y ago

Injury or disease can occur in joints. This disease is known as osteoarthritis. It is a joint disorder.

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Q: How does a joint move a bone?
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