Explain the importance of the myelin sheath in determining the speedof

1.	Explain the importance of the myelin sheath in determining the speedof nerve impulses.
Answer» Answer: Most nerve fibres are surrounded by an insulating, fatty SHEATH called myelin, which acts to SPEED up impulses. The myelin sheath CONTAINS periodic breaks called nodes of Ranvier. By JUMPING from node to node, the impulse can travel much more QUICKLY than if it had to travel along the entire length of the nerve fibre.

Explain the importance of the myelin sheath in determining the speedof nerve impulses.

Answer»

Answer:

Most nerve fibres are surrounded by an insulating, fatty SHEATH called myelin, which acts to SPEED up impulses. The myelin sheath CONTAINS periodic breaks called nodes of Ranvier. By JUMPING from node to node, the impulse can travel much more QUICKLY than if it had to travel along the entire length of the nerve fibre.

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Explain the importance of the myelin sheath in determining the speedof nerve impulses.

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