NEED HELP WITH 10 and 11 (2016 practice exam)

10. Use the axes provided below to answer questions 8A and B. (2 pts) A) Draw a curve depicting the inactivation of Nay channels as a function of holding voltage, where at -80 m V none of the channels are inactivated; at -40 mV 50% of the channels are inactivated, and at +20 m V all of the channels are inactivated. (0.5 pt) B) Now draw a curve depicting the activation properties of Nay channels resulting from membrane depolarization to increasing voltages. Here, depolarizing voltage steps to -60 m V do not activate any Nav channels, step to 0 mV activate 50% of channels, and steps to +40 mV activate 100% of channels. (0.5 pt) 100- -100 % of Na channels % of Na, channels not inactivated that get activated 50- -50 -80 -60 -40 -20 0 20 40 Membrane voltage (mV) C) Define a window current, and label the voltage range where it occurs in the graph. (0.5 pts each, 1 pt total) 11. Briefly describe how silent glutamatergic synapses become activated during long term potentiation, describing all of the key neurotransmitter receptors, kinases, and events that give rise to the process. (3 pts)