The rapid rise and fall in force produced by a muscle fiber after a single

The rapid rise and fall in force produced by a muscle

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69)The rapid rise and fall in force produced by a muscle fiber after a single action potential is a(n)69)A)muscle action potential.B)twitch.C)unfused tetanus.D)tetanus.E)motor end plate potential.10
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70)When a muscle is stimulated repeatedly at a high rate, the amount of tension gradually increases toa steady maximum tension. This state of maximum tension is called70)71)A muscle producing almost peak tension during rapid cycles of contraction and relaxation is said tobe in71)72)If a second stimulus arrives before the relaxation phase has ended, a second, more powerfulcontraction occurs. This addition of one twitch to another is called72)73)A single motor neuron together with all the muscle fibers it innervates is called a(n)73)A)end foot.B)myotome.C)dermatome.D)end plate.E)motor unit.74)The contraction of a muscle exerts a pull on a bone because muscles attach to bones by74)75)The increase in muscle tension that is produced by increasing the number of active motor units iscalled75)11
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76)The type of contraction in which the muscle fibers do not shorten is called76)77)A weight-lifter strains to lift a heavy weight and there is no movement of the person's armsholding on to the weight. This type of contraction is called a(n) ________ contraction.77)A)tetanusB)isometricC)concentricD)isotonicE)treppe78)You try to pick up an object and discover that it is much heavier than you expected. Which processmust occur in the muscle to increase tension so you can pick up the object?78)79)In which of the following would the motor units have thefewestmuscle fibers?79)80)In an isotonic contraction,80)12
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Figure 10-2 Muscle ContractionsUse Figure 10-2 to answer the following questions:
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