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Medical Definition of Extrinsic muscles
1. Muscles arising outside of, but which act upon, the structure under consideration. For example, the muscles operating the hand but having fleshy bellies located in the forearm. (05 Mar 2000)
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1. Muscles arising outside of, but which act upon, the structure under consideration. For example, the muscles operating the hand but having fleshy bellies located in the forearm. (05 Mar 2000)