Classification of Joints in Human Body — NEET Biology

Correct answer: A — A-iv-x, B-iii-y, C-ii-z, D-i-w, E-v-a

The anchor concept is the classification of synovial joints based on their structure, examples, and the type of movement they allow. A. Ball and Socket Joint: 'between humerus and pectoral girdle' is an example. It 'allows considerable movement' which implies movement in all planes (multiaxial). B. Hinge Joint: 'knee joint' is an example. It primarily allows movement in one plane, like a door hinge. C. Pivot Joint: 'between atlas and axis' is an example. It 'permits rotation'. D. Gliding Joint: 'between the carpals' is an example. It allows 'slight sliding movement'. E. Saddle Joint: 'between carpal and metacarpal of thumb' is an example. It allows 'greater freedom than hinge, less than ball and socket' (this is a general characteristic of saddle joints, consistent with its specific movement capabilities). Correct matches: A - iv - x B - iii - y C - ii - z D - i - w E - v - a Comparing this with the options, option A provides the correct mapping. The final answer is A. The concept tested is the detailed knowledge of different types of synovial joints, their specific examples, and the characteristic movements they facilitate, as given in the NCERT text.