Synovial joints contain a joint cavity that separates the bones involved. This cavity is filled with synovial fluid to lubricate the joint. The correct answer to the question is the joint cavity. ;
The bones in a synovial joint are separated by a space called a joint cavity , which is filled with synovial fluid for lubrication and nourishment. This is crucial for the proper function and movement of the joint. Therefore, the correct answer is joint cavity .
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