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Title: Predict Question: How will the action potential at R1 (or R2) change as you continue to increase the Post by: trin on Sep 29, 2012 Experiment Results
Predict Question: Predict Question: How will the action potential at R1 (or R2) change as you continue to increase the stimulus voltage? Your answer : c. The action potential will not change. Stop & Think Questions: Why is the action potential recorded by the second recording electrode (R2) delayed relative to the action potential recorded by the first recording electrode (R1)? You correctly answered: c. The action potential had to propagate from R1 to R2. An increase in extracellular K+ would depolarize a neuron. This depolarization would occur if neurons were damaged. From what you have just learned about generating an action potential, what effect would this have on nearby axons? The nearby axonal membranes will ___________. You correctly answered: b. be depolarized to values near or above threshold voltages. |