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Anatomy Hand d3a126b6

Insertion of extensor carpi ulnaris

A
Base of proximal phalanx of thumb
B
Base of Distal phalanx of thumb
C
Base of 5th Metacarpal
D
Scaphoid base
High-Yield Explanation
Ans. is 'c' i.e., Base of 5th MetacarpalExtensor carpi ulnariso Origin : Lateral epicondyle of humerus and posterior border ulnao Insertion : Base of 5th metacarpalo Nerve supply : Posterior interosseus nerveo Action : Extension (dorsiflexion) and adduction of hand.
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