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Flexor digitorum longus

(Science: anatomy, muscle) origin, middle third of posterior surface of tibia; insertion, by four tendons, perforating those of the flexor brevis, into bases of distal phalanges of four lateral toes; action, flexes second to fifth toes; nerve supply, tibial nerve.

Synonym: musculus flexor digitorum longus, long flexor muscle of toes, musculus flexor longus digitorum.