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Title: physio EX 9.0 EXERCISE 6 act 2 Post by: acyonkeu on Nov 27, 2012 When vagus nerve stimulation was applied to the frog heart, _______. the force of contraction increased the force of contraction decreased and the heart rate slowed and eventually stopped the heart rate slowed and eventually stopped the force of contraction decreased the force of contraction increased and the heart rate slowed and eventually stopped What part of your tracing illustrates vagal escape? the part where the heart rate slowed down the part where the force of contraction decreased the part where the heart resumed beating the part where the heart stopped 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? about 70 beats per minute slower than 70 beats per minute faster than 100 beats per minute about 100 beats per minute Which of the following has the fastest rate of spontaneous depolarization? the SA node Purkinje fibers AV bundle branches the AV node Title: Re: physio EX 9.0 EXERCISE 6 act 2 Post by: acyonkeu on Nov 30, 2012 Content hidden
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