Le site de vulgarisation scientifique de l’Université de Liège. ULg, Université de Liège
Synovial fluid

Loose or diarthritic articulations (such as those of the neck or the knee) are also called synovial joints because the extremities of the bones are housed in a synovial envelope (called the synovial membrane) filled with a lubricating liquid, synovial fluid.

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