Myelin sheaths insulate nerve fibers
A myelin sheath is a layer of myelin (a dielectric, or electric insulator) around the axon of a neuron.
All of the nerves in the human body are covered in an insulating sheath called myelin.
An insulating layer that surrounds the axon is a myelin sheath.
Myelin Sheath Myelin Sheath
Myelin sheath is the "cover" if you like of nerves. It's structure is important in helping pass the nerve impulses along it's axon, from the body, to the terminal buttons. Long story short, a degeneration of the Myelin sheath leads to interrupted, or non existent impulses, and causes a very well known disease, called MS (multiple sclerosis)
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Myelin Sheath Myelin Sheath
Nicotine stimulates CREB phosphorylation which regulates the expression of myelin basic protein and myelin oligodendrocyte glycoprotein.
Myelin is a lipid which surrounds the axon and provides for faster and more complex neural conduction.
That substance is called the myelin cell or myelin sheath.
The endoneurium surrounds and protects the myelin sheath.