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name the origin, attachment, function and nerve supply of the dorsal interosi of the hand
origin from metarparpals insert into Extensor expansions
& bases of proximal phalanges of digits 2-
4
supplied by ulnar nerve
DAB3; abducts middle 3
digits & assists
lumbricals in flexing the
interphalangeal joints
& bases of proximal phalanges of digits 2-
4
supplied by ulnar nerve
DAB3; abducts middle 3
digits & assists
lumbricals in flexing the
interphalangeal joints
