Pivot joint Pivot joint In animal anatomy, a pivot joint (trochoid joint, rotary joint, lateral ginglymus) is a type of synovial joint. In pivot joints, the axis of a convex articular surface is parallel with the longitudinal axis of the bone. According to one classification system, a pivot joint like the other synovial joint —the hinge joint has one degree of freedom. Note that the degrees of freedom of a joint is not the same as the same as joint's range of motion. Pivot joints allow for rotation, which can be external (for example when rotating an arm outward), or internal (as
Bacterial gliding large macromolecular assemblies located on the bacterium's cell body, while yet another utilize "focal adhesion complexes" and "treadmilling" of surface adhesins distributed along the cell body. The gliding motility of "Flavobacterium johnsoniae" uses a helical track superficially similar to "M. xanthus", but via a different mechanism. Here the adhesin SprB is propelled along the cell surface (spiraling from pole to pole), pulling the bacterium along 25 times faster than "M. xanthus". "Flavobacterium johnsoniae" move via a screw-like mechanism and are powered by a proton motive force. Bacterial gliding Bacterial gliding is a process of motility whereby a bacterium can move