The characteristics and an example of a symbol joint in humans is
`{:(,"Characterstics","Example"),((a),"Lymph filled between two bones, limited movement","Gliding joint between carpals"),((b),"Fluid cartilage between two bones, limited movements","Knee joint"),((c),"Fluid filled between two joints, provides cushion","Skull bones"),((d),"Fluid filled synovial cavity between two bones","Joint between atlas and axis"):}`

Options

A. `{:(,"Characteristics",,"Example"),(,"Fluid filled between two joints, provides cushion",,"Skull bones"):}`
B. `{:(,"Characteristics",,"Example"),(,"Fluid-filled synovial cavity between two bones",,"Joint between atlas and axis"):}`
C. `{:(,"Characteristics",,"Example"),(,"Lymph-filled between two bones, limited movement",,"Gliding, joint"):}`
D. `{:(,"Characteristics",,"Example"),(,"Fluid catilage between two bones, limited movement",,"Knee joint"):}`

Answer

b

Explanation

Synovial joints are characterised by the presence of a fluid filled synovial cavity between the articulating surfaces of the two bones. Such an arrangement allow considerable movement. These joints help in locomotion and many other movements. Ball and socket joint (between humerus and pectoralgirdle), HInge joint (knee joint), Pivot joint (between atlas and axis), Gliding joint (between the carpals) and Saddle joint (between carpal and metacarpal of thumb) are some example.