Which of the Following Statements Correctly Describes the Nodes of Ranvier

Question

Which of the following statements correctly describes the nodes of Ranvier?
A)They are areas of myelin-covered axonal membrane.
B)They are surrounded by lipid-rich Schwann cells.
C)They are often referred to as internodes of the axons.
D)They contain a high density of voltage-gated channels.

Accepted Answer

Nodes of Ranvier are the gaps between myelinated segments of axons. They contain a high density of voltage-gated channels, which are responsible for the rapid conduction of action potentials along myelinated axons.