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Multiple Choice
Which of the following structures helps electrical impulses speed along the length of the axon?
A
Cell body
B
Myelin sheath
C
Axon terminals
D
Dendrites
Verified step by step guidance
1
Understand the structure of a neuron: Neurons are composed of a cell body, dendrites, an axon, and axon terminals.
Identify the role of the axon: The axon is responsible for transmitting electrical impulses away from the cell body towards the axon terminals.
Learn about the myelin sheath: The myelin sheath is a fatty layer that wraps around the axon, providing insulation.
Recognize the function of the myelin sheath: The myelin sheath increases the speed of electrical impulse transmission along the axon by allowing the impulse to jump between gaps in the sheath, known as nodes of Ranvier.
Conclude that the myelin sheath is the structure that helps electrical impulses speed along the length of the axon, as it facilitates rapid signal conduction.