Action potentials:
A)travel swiftly down axons with myelin and more slowly in axons without myelin.
B)travel swiftly down axons without myelin and more slowly in axons with myelin.
C)travel swiftly down dendrites with myelin and more slowly in dendrites without myelin.
D)travel swiftly down dendrites without myelin and more slowly in dendrites with myelin.

Question

Quizplus · Accepted Answer

Action potentials travel swiftly down axons with myelin because the myelin acts as an insulator and allows the electrical signal to jump from one node of Ranvier to the next, increasing the speed of conduction. In axons without myelin, the action potential must propagate along the entire length of the axon, which makes the conduction slower.

Action Potentials