A neuron has received a signal, causing ion channels to open in the cell membrane, letting positively charged ions flow in. This has caused the membrane potential to change suddenly from -70 to +50 millivolts. This will cause a (an)_____ to occur.
A)resting state
B)action potential
C)negative charge
D)positive charge

Question

Quizplus · Accepted Answer

The sudden reversal of the resting potential of -70 millivolts to a positive value of +50 millivolts that occurs when ion channels open-allowing positively charged ions to flow in through the cell membrane-creates an action potential.

A Neuron Has Received a Signal, Causing Ion Channels to Open