Which is TRUE regarding Skeletal Muscle fibers? Slow-twitch (Type I, or "red" muscle) fatigue quickly and rely exclusive
Posted: Tue May 17, 2022 11:22 pm
Which is TRUE regarding Skeletal Muscle fibers? Slow-twitch (Type I, or "red" muscle) fatigue quickly and rely exclusively on glucose as a metabolic fuel. Muscle fibers increase power output by switching from phosphocreatine to oxidative fuels. Groups of individual cells, each containing a mixture of fiber types, are activated by one neuron. Groups of individual cells, each containing similar fiber types, are activated by one neuron. Fast-twitch (Type IIB or Type IIx, or "white" muscle) resist fatigue and rely primarily on lipid as a metabolic fuel.