The nodes of Ranvier
A) increase the conduction velocity of an action potential.
B) allow the current to flow easily between the extracellular fluid and the axon.
C) allow action potentials to develop.
D) allow for saltatory conduction of the action potential.
E) All of these are true of nodes of Ranvier.

Question

Quizplus · Accepted Answer

Nodes of Ranvier serve multiple functions. They increase the conduction velocity of an action potential by allowing for saltatory conduction, where the action potential jumps from one node to the next, rather than traveling the entire length of the axon. The current can flow easily between the extracellular fluid and the axon, which helps to propagate the action potential. Additionally, action potentials can only develop at the nodes of Ranvier, underscoring their importance in the nervous system. Therefore, all of the statements given in the answer choices are true.

The Nodes of Ranvier