3/11/2020 PhysioEx Exercise 3 Activity 4 1/5 PhysioEx Lab Report Exercise 3: Neurophysiology of Nerve Impulses Activity 4: The Action Potential: Importance of Voltage-Gated Na Channels Name: Courtney Date: 11 March 2020 Session ID: session-453185c6-94f8-e448-b081-1d37dedb42db Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. Experiment Results Predict Questions Stop & Think Questions + Voltage-gated Na channels are membrane channels that open You correctly answered: when the membrane depolarizes. 1 + When open, Na channels allow You correctly answered: Na ions to diffuse into the cell. 2 + + Which of the following is true of an action potential? You correctly answered: All of these answers are correct. 3 Which of the following can reduce the likelihood of an action potential? You correctly answered: All of these can reduce the likelihood of an action potential. 4 Predict Question 1: If you apply TTX between recording electrodes R1 and R2, what effect will the TTX have on the action potentials at R1 and R2? Your answer: TTX will block the response at R2 but have no effect at R1. 1 Predict Question 2: If you apply lidocaine between recording electrodes R1 and R2, what effect will the lidocaine have on the action potentials at R1 and R2?
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- Lidocaine, TTX, session ID