Locomotion and Movement Question 19

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

[NEET 2013]

Characteristics Examples
(a) Fluid filled between two joints, provides cushion Skull bones
(b) Fluid filled synovial cavity between two bones Joint bewtween atlas and axis
(c) Lymph filled between two bones , limited movement gliding joint between carpals
(d) Fluid cartilage between two bones , limited movement Knee joit
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Answer : b

Hints & Solutions

(b) Synovial joints are characterised by the presence of a fluid filled synovial cavity between the articulating surfaces of the two bones. Such an arrangement allows considerable movement. These joints help in locomotion and many other movements. Ball and socket joint (between humerus and pectoral girdle), 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 examples.