Which of the following is not a characteristic of the synovial fluid?

lubrication

shock absorption

regulation of water balance in the joint

protection of articular cartilage

Regulation of water balance in the joint is not a characteristic.

Synovial fluid is made of proteins and cells, rich in hyaluronic acid.

You can found it on articulations covering de extremes of the bone.

Its function is to lubricate the movement, protect the articular cartilage and shock absorption when we jump or have some kind of impact.