Various types of joints: spherical, block-shaped, ellipsoid, cylindrical.

The joints are movable joints of the skeleton bones, separated by a slit, covered with a synovial shell and the articular bag. Intermittent, honey compound, allowing articular bones to make movements relative to each other with muscles. The joints are located in the skeleton where distinct movements occur: flexion and extension, lead, and bring, pronation and supination, rotation.