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Home Q & A Board Biology-Related Homework Help General Biology
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hawtshrlyn hawtshrlyn
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12 years ago
 Slight Smile please i need help
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hawtshrlyn Author
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#1
12 years ago
potentials are propagated along an axon?
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12 years ago
The myelin sheath (a tubular case or envelope) gives the whitish appearance to the white matter of the brain. Myelin cells are included in the category of Glial cells. Glial cells function to support the processes of neurons in a variety of ways. The glial cells forming myelin sheaths are called oligodendrocytes in the central nervous system and Schwann cells in the peripheral nervous system. The gaps (approximately 1 micrometer wide) formed between myelin sheath cells long the axons are called Nodes of Ranvier. Since fat serves as a good insulator, the myelin sheaths speed the rate of transmission of an electrical impulse along the axon. The electrical impulse jumps from one node to the next at a rate as fast as 120 meters/second. This rapid rate of conduction is called saltatory conduction.
Volunteers are seldom paid; not because they are worthless, but because they are PRICELESS!
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12 years ago
Not sure if this is what you are looking for since your question is kind of discombobulated..
Volunteers are seldom paid; not because they are worthless, but because they are PRICELESS!
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duddyduddy
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12 years ago
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hawtshrlyn Author
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#5
12 years ago
thanks guys~~~~~~~~~~~~~~~~!!!!!!!!!!!!!!!!!
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#6
12 years ago
The myelin sheaths create gaps in the axon known as nodes of Ranvier which allows the action potential to "jump" along the axon rather than travel the entire distance.
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