The main function of a joint is to create MOVEMENT. Joints makes movement of the bone possible.
the main one is of course the brain. You can't move without it.
movement of animals
Joint fluid analysis, also called synovial fluid analysis
Water conservation ensures that other animals have access to clean water. This makes it possible for such animals to thrive in a given area.
Movement is not possible incase of fixed joints
striated muscles THIS IS WRONG! Smooth muscle is correct.