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Title: PhysioEx A&P - Exercise 3 activity sheet Post by: overhere on Sep 4, 2011 Inhibiting a Nerve Impulse
10. What was the effect of curare on eliciting an action potential? 11. Explain the reason for your answer to question 10 above. My results show that the curare didn't have any effect on eliciting an action potential. The explaination would therefore simply be that there was no change to the tracing to show that curare had any effect on the nerve response to electrical stimulation. This doesn't appear correct as the curare is supposed to be a blocker of neural impulses. Where am I going wrong??? Title: Re: PhysioEx A&P - Exercise 3 activity sheet Post by: bio_man on Sep 4, 2011 0. What was the effect of curare on eliciting an action potential? Curare had no effect—an action potential was still generated when the nerve was stimulated at threshold voltage. Curare works by blocking synaptic transmissions so that neural impulses do not travel from neuron to neuron. The detached nerve which we are experimenting with does not have any synapses to be blocked. In a living animal, however, curare will kill, as neural impulses cannot jump synapses to allow the heart to work or the animal to breathe. Title: Re: PhysioEx A&P - Exercise 3 activity sheet Post by: overhere on Sep 4, 2011 Thanks heaps. That makes sense and sounds so obvious :-[
The nervous system is the one that I don't seem to understand easily. Title: Re: PhysioEx A&P - Exercise 3 activity sheet Post by: bio_man on Sep 4, 2011 You're welcome.
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