Which of the following is true regarding the action potential (AP)?
A) The AP is conducted along the dendrite.
B) The AP is conducted faster in unmyelinated nerve cells.
C) The AP is an all-or-none electrical event.
D) The AP amplitude is higher for an intense signal.
E) The AP amplitude depends on its location along the axon.

Question

Quizplus · Accepted Answer

The action potential is an all-or-none electrical event in which an initial depolarization reaches the threshold level and triggers a rapid, self-regenerating depolarization that continues until the membrane potential reaches its maximum positive value.

Note: Option A is incorrect because the AP is conducted along the axon, not the dendrite. Option B is incorrect because the AP is conducted faster in myelinated nerve cells due to saltatory conduction. Option D is incorrect because the AP amplitude is not affected by the intensity of the signal but rather by the size and shape of the axon. Option E is incorrect because the AP amplitude is independent of its location along the axon in a given neuron.

Which of the Following Is True Regarding the Action Potential