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overhere overhere
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12 years ago
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???
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wrote...
Valued Member
Educator
12 years ago
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.
overhere Author
wrote...
12 years ago
Thanks heaps. That makes sense and sounds so obvious  Sad Dummy

The nervous system is the one that I don't seem to understand easily.
wrote...
Valued Member
Educator
12 years ago
You're welcome.
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