extensor

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extensor

 [ek-sten´ser] (L.)
1. causing extension.
2. a muscle that extends a joint; see muscle.

ex·ten·sor

(eks-ten'sŏr, -sōr), [TA]
A muscle the contraction of which causes movement at a joint with the consequence that the limb or body assumes a more straight line, or so that the distance between the parts proximal and distal to the joint is increased or extended; the antagonist of a flexor. See: muscle.
[L. one who stretches, fr. ex-tendo, to stretch out]

extensor

(ĭk-stĕn′sər)
n.
A muscle that extends or straightens a limb or body part.

ex·ten·sor

(eks-ten'sŏr) [TA]
A muscle the contraction of which causes movement at a joint with the consequence that the limb or body assumes a straighter line, or so that the distance between the parts proximal and distal to the joint is increased or extended; the antagonist of a flexor.
See: muscle
[L. one who stretches, fr. ex-tendo, to stretch out]

extensor

a muscle that extends or straightens a limb.
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