Insertion of extensor carpi ulnaris
Base of proximal phalanx of thumb
Base of Distal phalanx of thumb
Base of 5th Metacarpal
Scaphoid base
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.
Hand