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NPTE MSK Review

muscle physiology

QuestionAnswer
Are Type 1 muscle fibers Aerobic or Anaerobic? aerobic - red
Are Type 1 muscle fibers slow or fast twitch? slow
Are Type 1 muscle fibers slow-oxidative or fast-glycolytic? slow-oxidative
Are Type 1 muscle fibers tonic or phasic? Tonic => tonic muscles are responsible for holding your posture
Are Type 2 muscle fibers Aerobic or Anaerobic? Anaerobic - white
Are Type 2 muscle fibers slow or fast twitch? fast twitch
Are Type 2 muscle fibers slow-oxidative or fast-glycolytic? fast-glycolytic
Are Type 2 muscle fibers tonic or phasic? phasic => phasic muscles are used for dynamic movement.
what are functional characteristics of Type 1 Muscle fibers? low fatigability, smaller fibers, large blood supply, large amt of mitochondia => Ex: marathon, swimming
what are functional characteristics of Type 2 Muscle fibers? high fatigability, large fibers, less blood supply, less mitochondria => Ex:high jump, sprinting
What are muscle spindles? Measures change in LENGTH...spread throughout muscle belly.
What is the Golgi Tendon Organ? Measures changes in TENSION. When a GTO is stimulated, it causes its associated muscle to relax by interrupting its contraction. When a muscle is inhibited by a GTO, the process is called autogenic inhibition.
What is an isometric contraction Metric = length. Tension develops but no change in length of muscle. STATIC
what is an isotonic contraction Tonic = tension. Muscle shortens/lengthens while resisting constant load. DYNAMIC
what is an isokinetic contraction tension develops while shortening or lengthening at a constant speed
Created by: xieude000
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