Which of the following statements about action potentials is false?
A)Electrical signals are propagated along a dendrite.
B)They require rapid changes in membrane potential.
C)Due to leaking, membranes are subject to subthreshold depolarization, which is insufficient to produce the action potential.
D)At the end of the action potential, most neurons show a transient hyperpolarization.
E)A refractory period is always necessary following an action potential.

Question

Quizplus · Accepted Answer

Electrical signals are not propagated along a dendrite. Instead, they are propagated along the axon of a neuron. Dendrites receive input from other neurons and transmit electrical signals (graded potentials) towards the cell body. These graded potentials can sum up and reach the threshold for an action potential to initiate at the axon hillock.

Which of the Following Statements About Action Potentials Is False