Te Synovial Membrane

Synovial fluid
Synovial fluid is found in joint cavities.
Synovial fluid
It is called synovial fluid.
Synovial fluid. It has a, I THINK, I think, a point one coefficient of friction rating. .1 anyways, its one of the slipperiest natural substances known to man.
Synovial fluid
Synovial Fluid

The inner membrane of synovial joints is called the synovial membrane and secretes synovial fluid into the joint cavity.

synovial fluid

water :) i know, it's so simple&you thought it was more complicated. but yes, it's water. haha.