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PEX-02-02 - Exercise 2 Skeletal Muscle Physiology Activity...

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Exercise 2: Skeletal Muscle Physiology: Activity 2: The Effect of Stimulus Voltage on Skeletal Muscle Contraction Lab Report Pre-lab Quiz Results You scored 50% by answering 2 out of 4 questions correctly. 1. Skeletal muscle fibers are innervated (stimulated) by You correctly answered: c. motor neurons. 2. A single action potential propagating down a motor axon results in You correctly answered: d. a single action potential and a single contractile event in the muscle fibers it innervates. 3. In resting skeletal muscle, calcium is stored in Your answer : b. the myofibril. Correct answer: c. the sarcoplasmic reticulum. 4. During the latent period for an isometric contraction Your answer : d. a single twitch occurs. Correct answer: c. the cellular events involved in excitation-contraction coupling occur. 010/05/11 page 1
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010/05/11 page 2 Experiment Results Predict Question: Predict Question: As the stimulus voltage is increased from 1.0 volt up to 10 volts, what will happen to the amount of active force generated with each stimulus?
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