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Home Q & A Board Biology-Related Homework Help Cell Biology
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colleen colleen
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10 years ago
Muscle-builders show off their muscles by
a. activating their autonomic nervous system.
b. willing the activation of their extensor muscles.
c. willing the activation of their flexor muscles.
d. simultaneously contracting their flexor and extensor muscles.
e. ingesting large amounts of sympathomimetic drugs.
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Sunshine ☀ ☼
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ThePsychicThePsychic
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10 years ago
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