If you wanted to pick up something heavier than your pencil (such as your textbook), you would need to have a stronger muscle contraction. In what way might you accomplish this?
a. stimulate more muscle cells
b. decrease the frequency of stimulation
c. decrease the refractory period
d. increase the frequency of stimulation
e. Both a and d are correct.
Answers: 3
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In 2009, 40% of all bicyclist fatalities occurred when the bicyclist, the driver, or both vehicle operators were
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