Question

gaps or interruptions in the myelin sheath are called:
a nodes of ranvier
b gap junctions
c neurofilaments
d tight junctions
e internodes

Explanation:

• Nodes of Ranvier are the gaps in the myelin sheath that allow for saltatory conduction of nerve impulses.
• Gap junctions are channels between cells that allow for direct communication.
• Neurofilaments are intermediate filaments in neurons that provide structural support.
• Tight junctions are barriers between cells that prevent leakage.
• Internodes are the segments of the axon covered by myelin.

Answer:

A. nodes of Ranvier