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What is myelin used for?
electrical insulation.
Speed up nerve transmissions.
What are myelins made up of?
SCHWANN CELLS.
wrap around axon, layers of cell membrane that wont allow electricity out.
Electrical insulation.
How are signals sent quicker in nerves with myelin?
SALUTATORY CONDUCTION
Less axon needed to be depolarised so AP jumps to node of ranviers.
What are nodes of ranvier?
Gaps between myelin and axon.