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Which neuroglial cell is responsible for the production of myelin sheaths around axons in the central nervous system?
Oligodendrocyte; processes of the oligodendrocytes form the myelin sheaths around the CNS nerve fibers
What gene is responsible for CMT1A?
It is caused by a mutation in a gene called peripheral myelin protein 22 (PMP22) located on chromosome 17.
It insulates the axon of the neuron?
An insulating layer that surrounds the axon is a myelin sheath.
What are schwann cell nucleus'?
myelin sheath peace.love.faith
What PNS neuroglia help to form myelin sheaths around larger nerve fibers in the PNS?
In the peripheral nervous system, Schwann cells are responsible for forming myelin sheaths around the larger nerve fibres in the PNS. Keep in mind that one Schwann cell myelinates one nerve. You may hear about oligodendrocytes, but these are responsible for myelination in the Central Nervous System, and myelinate multiple nerves.
What are oligodendrocytes responsible for?
myelination of the axons and the dendrites are responsible for connection between the cell body and myelin
What substance is responsible for the white appearance of white matter?
The Myelin Sheath around the axon
What insulates nerve fibers?
Myelin sheaths insulate nerve fibers
Which neuroglial cell is responsible for the production of myelin sheaths around axons in the central nervous system?
Oligodendrocyte; processes of the oligodendrocytes form the myelin sheaths around the CNS nerve fibers
What gene is responsible for CMT1A?
It is caused by a mutation in a gene called peripheral myelin protein 22 (PMP22) located on chromosome 17.
What is the definition of myelin sheath?
A myelin sheath is a layer of myelin (a dielectric, or electric insulator) around the axon of a neuron.
It insulates the axon of the neuron?
An insulating layer that surrounds the axon is a myelin sheath.
What increases the speed of the transmission?
Myelin Sheath Myelin Sheath
What is the white lipid material that insulates the axon of a neuron?
The white lipid material that insulates the axon of a neuron is called myelin. In the central nervous system, myelin is created by oligodendrocytes while in the peripheral nervous system the myelin is created by Schwann cells. The purpose of myelin is to speed up action potentials. It's important to know that the myelin does not coat the axon entirely; each sheath of myelin is separated by a gap, called a node of Ranvier. These gaps are responsible for the quick transport of action potentials, due to the fact that the potentials can "jump" from node to node rather than having to travel down the entire length of the axon (this is called saltatory conduction).
What are schwann cell nucleus'?
myelin sheath peace.love.faith
What increases the speed of impulse transmission?
Myelin Sheath Myelin Sheath
How does nicotine affect the myelin production?
Nicotine stimulates CREB phosphorylation which regulates the expression of myelin basic protein and myelin oligodendrocyte glycoprotein.
