If myelin makes action conduction velocity faster, why are axons not completely covered with myelin? That is, what would happen to the electrical signal if the axon was completely covered in myelin and had no Nodes of Ranvier?
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The Nodes of Ranvier are small gaps in the myelin sheath where the axon is exposed, allowing for the rapid propagation of action potentials through a process called saltatory conduction. If an axon were completely covered in myelin with no Nodes of Ranvier, the Show more…
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How does myelin alter conduction of a neural impulse along a nerve fiber? What would happen to neural impulse transmission in a myelinated axon without nodes of Ranvier? Explain.
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