NCIt synonyms : Type II Muscle Fiber; Muscle Fibers Fast-Twitch; Type II Skeletal Muscle Fiber; Muscle Fibers, Fast-Twitch;
NCIt definition : A large-diameter skeletal muscle fiber that uses glycogen reserves rather than oxygen-rich
blood for quick energy and a more rapid production of force. Fast twitch muscle fibers
have a low oxidative capacity and can produce ATP without the need for oxygen, resulting
in a higher activation threshold and a higher velocity signal conduction.;