Medical Definition of Twitch muscle
1.
Striated muscle innervated by a single motoneuron and having an electrically excitable membrane that exhibits an all or none response (c.f. Tonic muscle): in mammals almost all skeletal muscles are twitch muscles.
Physiologists often divide muscles into fast and slow twitch types, the fast twitch muscles being associated with fast motor units.
This entry appears with permission from the Dictionary of Cell and Molecular Biology
(11 Mar 2008)
Lexicographical Neighbors of Twitch Muscle
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