You are a neurosurgeon performing surgery on a 50-year-old man. When you insert an electrode into the axon of one of his neurons while it is not receiving or sending information, what voltage should you record with your instruments?
A) 55 mv
B) -55 mv
C) 70 mv
D) -70mv

Question

Quizplus · Accepted Answer

The resting membrane potential of a neuron is typically around -70mV. Therefore, when inserting an electrode into an axon not currently receiving or sending information, a voltage reading of -70mV would be expected. Option D is the only option that reflects this value.

You Are a Neurosurgeon Performing Surgery on a 50-Year-Old Man