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blazer103 blazer103
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11 years ago

Research shows that in the absence of neural and hormonal influences, the SA node generates action potentials at a frequency of about 100 times per minute. However, the resting heart rate is about 70 beats per minute. What would the approximate heart rate be if the vagus nerve were severed?
    slower than 70 beats per minute
    about 100 beats per minute
    about 70 beats per minute
    faster than 100 beats per minute
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#1
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11 years ago Edited: 11 years ago, bio_man
about 100 beats per minute
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