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31.The larger the motor units within a muscle, the more

Question : 31.The larger the motor units within a muscle, the more : 1417093

 

31.The larger the motor units within a muscle, the more precisely controlled the gradations of contraction.

32.Increasing the number of recruited motor units in a muscle increases its force or strength of contraction.

33.With twitch summation, the muscle fiber is stimulated so rapidly that it does not have an opportunity to return to resting potential between stimuli.

34.Tetanus occurs when a muscle fiber is stimulated so rapidly that it is not allowed to relax between stimulations, resulting in a smooth, sustained contraction.

35.The shorter a muscle fiber is before the onset of a contraction, the greater the force that can be developed upon the subsequent contraction because the thin filaments are already partially slid inward.

36.The metabolic capability of a muscle fiber can affect the degree of tension it can develop.

37.Denervated muscle fibers become progressively smaller and their content of actin and myosin decreases.

38.A skeletal muscle produces motion by pulling the origin toward its insertion.

39.Bones serve as fulcrums for muscle action.

40.Most muscle-lever systems work at a mechanical disadvantage.

 

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