The characteristics and an example of a synovial joint in humans is

• Characteristics	Examples
  Fluid cartilage between two bones, limited movements	Knee joints

• Fluid filled between two joints, provides cushion

  Skull bones

• Fluid filled synovial cavity between two bones

  Joint between atlas and axis

• Lymph filled between two bones, limited movement

  Gliding joint between carpals

C.

Joint between atlas and axis is pivot joint, which is an example of synovial joint characterised by the presence of a fluid-filled synovial cavity between the articulating surface of the two bones.

Knee joint (hinge joint) is a synovial joint characterised by the presence of fluid filled synovial cavity between the articulating surfaces of the two bones.

Fluid cartilage between two bones having limited movements is slightly movable joint. In freely movable joints fluid filled between two joints provides cushion.

In gliding joint, the articulating bones can slide upon one another.