File talk:Mmk145 Figure 11 lab 5.png

• Date - Yes

• Purpose - Yes, very good.

• Appropriate pictures - Yes

• Question 10
  • a. Correct; could have measured more precisely. Explanation good.
  • b. Correct; explanation is good. Nice picture!
  • c. Correct; explanation is good. Nice picture!

• Question 11
  • a. Correct.
  • b. What you say is correct, but what is the key gate that is responsible for preventing another action potential?

• Question 12
  • a. In voltage clamp, the current that would flow is measured, and the opposite current is injected into the cell - so no net current flows across the cell. So your explanation is not correct.
  • b. Correct.

• Question 13
  • a. Your description of the current is correct, but you need to clarify that this is due to the effects of the gates on the conductance.
  • b. Correct.

• Question 14
  • a. Again, you are assuming that the current flows across the membrane - but if it did, the membrane potential would change.
  • b. Your explanation is basically correct.

• Question 15
  • a. What you say is correct. You should have shown the modified the equation.
  • b. From the simulation, the correct value should be the potassium Nernst potential, which is given as -77 mV.

• Overall, good to very good. You are not completely clear about how to think about voltage clamp, but your data are good, your figures are very nice, and some of your explanations are excellent. Please review the material on Neurowiki, watch the videos, and use office hours to understand the material even better.

Hillel Chiel (talk) 21:46, 18 September 2017 (EDT)