《英文msh詞典》Muscle Fiber,Red
[入口詞] Muscle Fiber,Red
[主題詞] Muscle Fibers,Fast-Twitch
[英文釋義] Skeletal muscle fibers having high myofibrillar ATPase activity,high glycolytic enzyme activities,and an intermediate glycogen content which produce a fast twitch. There are two types. Fast fatigable fibers,also called white fibers,have a low myoglobin content,and a small mitochondrial content,and fatigue rapidly due to their limited glycogen content and low capacity for oxidative metabolism. Fast fatigue-resistant fibers,also called red fibers,have a large mitochondrial content and a high myoglobin content,related to their resistance to fatigue. (From Best,Physiological Basis of Medical Practice,12th ed,p100)