Muscle Atlas

Flexor Digitorum Superficialis

Origin: Humeroulnar head: medial epicondyle of humerus, ulnar collateral ligament, and coronoid process of ulna; Radial head: superior half of anterior border of radius
Insertion: Bodies of middle phalanges of digits 2 - 5
Action: Flexes middle phalanges at proximal interphalangeal joints of medial four digits; acting more strongly, it also flexes proximal phalanges at metacarpophalangeal joints and hand
Innervation: Median nerve (C7, C8 and T1)
Arterial Supply: Ulnar artery

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