What does the diagram of the neuron illustrate regarding myelin sheath formation?
Understand the Problem
The image depicts the structure of a neuron, specifically illustrating the myelin sheath formation and associated components like dendrites, axon hillock, cell body, and Schwann cells. It highlights the organization and roles of these parts in neuron function.
Answer
Schwann cells form myelin sheaths around axons for faster impulse transmission.
The diagram illustrates how Schwann cells wrap around the axon to form the myelin sheath, which insulates the axon and facilitates faster nerve impulse transmission through saltatory conduction at the Nodes of Ranvier.
Answer for screen readers
The diagram illustrates how Schwann cells wrap around the axon to form the myelin sheath, which insulates the axon and facilitates faster nerve impulse transmission through saltatory conduction at the Nodes of Ranvier.
More Information
The myelin sheath is crucial for efficient nervous system function, allowing electrical impulses to travel quickly along the axon by jumping between the Nodes of Ranvier, a process known as saltatory conduction.
Tips
A common mistake is thinking that the myelin sheath covers the entire axon length without gaps. The Nodes of Ranvier are critical for quick impulse travel.
Sources
- Myelinated Neuron Diagram - BYJU'S - byjus.com
- Myelin: A Specialized Membrane for Cell Communication - Nature - nature.com
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