Propagation of a myelinated neuron __________.
A) occurs more slowly than an unmyelinated neuron
B) occurs only at the nodes of Ranvier
C) require lower thresholds to achieve an action potential than an unmyelinated neuron
D) all of the above

Question

Quizplus · Accepted Answer

Propagation of a myelinated neuron occurs only at the nodes of Ranvier, where the axon is exposed and the action potential can jump from node to node. The myelin sheath actually speeds up the rate of transmission, so option A is incorrect. Option C is also incorrect as myelinated neurons require higher thresholds to achieve an action potential.

Propagation of a Myelinated Neuron __________