| http://www.w3.org/ns/prov#value | - We also have joints that allow ourvertebrae to move.A material called cartilage, which keeps the bones from rubbing against each other during motion,covers the ends of the bones of a joint.There is a little bag containing a small amount of fluid called synovium between the two pieces ofcartilage in a joint.The combination of cartilage and synovium allows for smooth, painless motion in any given jo
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