The myelin sheath is formed by specialized glial cells in the nervous system. In the central nervous system (CNS), oligodendrocytes produce myelin, while in the peripheral nervous system (PNS), Schwann cells are responsible for its formation. These cells wrap around the axons of neurons in multiple layers, providing insulation that enhances the speed of electrical signal transmission. The myelin sheath is crucial for efficient communication between nerve cells.
The Schwann cell forms a myelin sheath around the axon of the nerve.
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The endoneurium surrounds and protects the myelin sheath.
A myelin sheath is a layer of myelin (a dielectric, or electric insulator) around the axon of a neuron.
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Oligodendrocytes are specialized neurolgical cells that produce myelin sheath.
Myelin insulation insulates nerve fibers by wrapping around them and forming a protective sheath. This myelin sheath helps to increase the speed of nerve impulse conduction along the nerve fibers.
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The fatty tissue that covers axons and speeds up impulses is called myelin. Myelin acts as an insulating layer, which helps to increase the speed and efficiency of nerve impulse transmission along the axon.
Schwann cells make the myelin sheath in the PNS. Each of the Schwann cells myelinate their own segment of the axon, they work together to make the myelin sheath.