Electrical Signals in Neurons I: Membrane Potential Vocabulary

Practice: A neuron is at V_rest= -70 mV. A Na+ channel opens; later, the membrane potential is measured again at V_m=+30 mV. Which of the following accurately describes this change? (Choose all that apply.)

Practice: In the process of carrying a signal, a neuron’s membrane potential goes from +25 mV to -90 mV. The neuron’s usual V_rest= -70 mV. Which of the following accurately describes this change? (Choose all that apply.)