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Per NCERT, the SHOULDER joint allows free arm movement in MANY directions because it is which type?
AFixed joint
BHinge joint
CPivot joint
DBall and socket joint — rounded top of upper arm bone fits into a shallow hollow of the shoulder bone
Answer & Solution
Correct answer: D. Ball and socket joint — rounded top of upper arm bone fits into a shallow hollow of the shoulder bone
Per NCERT §3.5.1, the shoulder is a ball and socket joint allowing all-direction movement (forward, backward, sideways, circular).
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