MCQ Questions
Q.1.
As the stimulus voltage increased, the resulting muscle tension _______.
  • 0%
    increasing the voltage applied
  • 0%
    The muscle force generated increased.
  • 0%
    increased to a point until it reached a plateau
  • 0%
    Intracellular ADP and inorganic phosphate are decreasing.
Q.2.
At which muscle length was the passive force the greatest?
  • 0%
    100 mm
  • 0%
    146 stimuli/sec
  • 0%
    clicking the mouse in rapid succession
  • 0%
    Cross-bridge cycling is taking place.
Q.3.
Which of the following occurs during the latent period of muscle contraction?
  • 0%
    Cross-bridge cycling is taking place.
  • 0%
    clicking the mouse in rapid succession
  • 0%
    release of acetylcholine or electrical stimulation
  • 0%
    Calcium is released from the sarcoplasmic reticulum.
Q.4.
Which of the following occurs during the contraction phase?
  • 0%
    clicking the mouse in rapid succession
  • 0%
    Cross-bridge cycling is taking place.
  • 0%
    increasing the voltage applied
  • 0%
    increasing the stimulus frequency
Q.5.
Which of the following describes the relationship between stimulus frequency and muscle tension?
  • 0%
    Increasing the duration of the rest period increased the duration of the subsequent maximal tension.
  • 0%
    When stimulus frequency increases, muscle tension increases to a maximum value.
  • 0%
    The sarcomeres are increasing in length, and the force generated decreases.
  • 0%
    The active force can increase or decrease, depending on the starting resting length of the muscle.
Q.6.
Why does the active force of skeletal muscle change with the muscle's resting length?
  • 0%
    Calcium is released from the sarcoplasmic reticulum.
  • 0%
    The active force can increase or decrease, depending on the starting resting length of the muscle.
  • 0%
    When stimulus frequency increases, muscle tension increases to a maximum value.
  • 0%
    The number of cross-bridges between actin and myosin varies.
Q.7.
Which of the following would result in fused or unfused tetanus compared to a single muscle twitch?
  • 0%
    increasing the stimulus frequency
  • 0%
    increasing the voltage applied
  • 0%
    clicking the mouse in rapid succession
  • 0%
    Increasing the duration of the rest period increased the duration of the subsequent maximal tension.
Q.8.
Which starting length of the muscle provided the maximum total force?
  • 0%
    increasing the voltage applied
  • 0%
    Muscle fatigue developed.
  • 0%
    the longest starting length
  • 0%
    clicking the mouse in rapid succession
Q.9.
Which of the following describes how increasing the duration of the rest period affected muscle tension?
  • 0%
    increasing the voltage applied
  • 0%
    Increasing the duration of the rest period increased the duration of the subsequent maximal tension.
  • 0%
    increasing the stimulus frequency
  • 0%
    The active force can increase or decrease, depending on the starting resting length of the muscle.
Q.10.
What might be occurring on a molecular level during the rest periods?
  • 0%
    Intracellular ADP and inorganic phosphate are decreasing.
  • 0%
    release of acetylcholine or electrical stimulation
  • 0%
    increasing the voltage applied
  • 0%
    increased to a point until it reached a plateau
Q.11.
At what stimulus frequency was maximal tetanic tension developed?
  • 0%
    Muscle fatigue developed.
  • 0%
    stimulus frequency increased
  • 0%
    The muscle force generated increased.
  • 0%
    146 stimuli/sec
Q.12.
Which of the following can trigger a muscle twitch?
  • 0%
    release of acetylcholine or electrical stimulation
  • 0%
    An increase in stimulus intensity is required to see the effect.
  • 0%
    The sarcomeres are increasing in length, and the force generated decreases.
  • 0%
    Calcium is released from the sarcoplasmic reticulum.
Q.13.
Increasing the applied voltage in the simulation corresponds to which in vivo event?
  • 0%
    motor unit recruitment
  • 0%
    Muscle fatigue developed.
  • 0%
    stimulus frequency increased
  • 0%
    the longest starting length
Q.14.
As the stimulus voltage was increased in this activity, which of the following occurred?
  • 0%
    The muscle force generated increased.
  • 0%
    The active force can increase or decrease, depending on the starting resting length of the muscle.
  • 0%
    increased to a point until it reached a plateau
  • 0%
    The number of cross-bridges between actin and myosin varies.
Q.15.
Which of the following does NOT describe treppe?
  • 0%
    An increase in stimulus intensity is required to see the effect.
  • 0%
    The sarcomeres are increasing in length, and the force generated decreases.
  • 0%
    increasing the voltage applied
  • 0%
    release of acetylcholine or electrical stimulation