PEX-03-03 - would depolarize a neuron. This depolarization...

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Exercise 3: Neurophysiology of Nerve Impulses: Activity 3: The Action Potential: Threshold Lab Report Pre-lab Quiz Results You have not completed the Pre-lab Quiz. 12/07/11 page 1
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12/07/11 page 2 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 : b. The peak value of the action potential will increase. 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)? Your answer : a. The stimulus strength was too small for a simultaneous recording to occur. Correct answer: c. The action potential had to propagate from R1 to R2. An increase in extracellular K+
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Unformatted text preview: 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 ___________. Your answer : d. be further depolarized to values below threshold voltages. Correct answer: b. be depolarized to values near or above threshold voltages. Experiment Data: Stimulus Voltage (mV) Peak Value at R1 (V) Peak Value at R2 (V) Action Potential 10 0 No 20 100 100 Yes 30 100 100 Yes 40 100 100 Yes 50 100 100 Yes 12/07/11 page 3 12/07/11 page 4 12/07/11 page 5 12/07/11 page 6 Post-lab Quiz Results You have not completed the Post-lab Quiz. 12/07/11 page 7 Review Sheet Results You have not completed the Review Sheet....
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This note was uploaded on 02/06/2012 for the course ZOOL 2304 taught by Professor Gollahon during the Fall '11 term at Texas Tech.

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PEX-03-03 - would depolarize a neuron. This depolarization...

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