Which of the following statements about axonal membranes is NOT true?
A) The resting potential of a typical neuron is -65 mV.
B) There is an electrical potential difference across a neuron's membrane.
C) The polarity correlates with a difference in ion distribution across the membrane.
D) At rest, there is a higher concentration of sodium ions inside the axon.
E) The sodium-potassium pump establishes a concentration gradient across the membrane.

Question

Quizplus · Accepted Answer

At rest, there is a higher concentration of potassium ions inside the axon, not sodium ions. The concentration gradient is important for establishing the resting potential and for propagating action potentials.

Which of the Following Statements About Axonal Membranes Is NOT