extensor digitorum muscle

(redirected from extensor (muscle) of fingers)
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ex·ten·sor di·gi·to·rum mus·cle

[TA]
muscle of posterior (extensor) compartment of forearm; origin, lateral epicondyle of humerus; insertion, by four tendons into the bases of the middle and distal phalanges; action, extends fingers, especially at metacarpophalangeal joint; nerve supply, radial (posterior interosseous).

ex·ten·sor di·gi·to·rum mus·cle

(eks-ten'sŏr dij-i-tō'rŭm mŭs'ĕl) [TA]
Origin, lateral epicondyle of humerus; insertion, by four tendons into the base of the proximal and middle and base of the distal phalanges; action, extends fingers; nerve supply, radial (posterior interosseous).
Synonym(s): musculus extensor digitorum [TA] , extensor muscle of fingers, musculus extensor digitorum communis.

extensor digitorum muscle

Forearm muscle. Origin: lateral epicondyle of humerus. Insertion: common extensor tendon of fingers. Nerve: radial (C7-C8). Action: extends fingers and wrist.
See: arm for illus. (Muscles of the Arm)
See also: muscle
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