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Do schwann cells wrap their cytoplasmic extensions around thick neuron fibers in the CNS?
Wiki User
∙ 11y ago
NO they wrap around the axon in the PNS!
Wiki User
∙ 11y ago
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Which of the following PNS neuroglia help to form myelin sheaths around larger nerve fibers in the PNS?
Schwann Cell
What is the specialized cells that myelinate the fibers of neurons found in the peripheral nervous system?
Schwann Cells
What are specialization cell that myelinate the fibers of neurons found in the PNS What What In The Butt Butt?
schwann cells
Are tendons extensions of muscle fibers?
Tendons are not extensions of muscle fibers. Rather, they are separate bands of tough, fibrous tissue that connect muscle to bone and allow them to move in conjunction.
A network of cytoplasmic fibers rods and granules that can collect proteins and secrete them outside the cell?
It's cytoskeleton
Which type of glial cells produces the myelin sheaths that insulate axons or nerve fibers in the central nervous system (CNS)?
myelin sheath
What refers to the constiction or gaps that occurs between the Schwann cells that are for impulse conduction in myelinated fibers?
Nodes of Ranvier
Is myelination of the nerve fibers in the periphreal nervous system the job of the schwann cell?
Yes, in the CNS it is oligodendrocytes that myelinate axons.
Which cell process are not myelinated?
According to McGraw Hill (please see related link below): Many nerve fibers in the CNS and PNS are unmyelinated. In the PNS, however, even the unmyelinated fibers are enveloped in Schwann cells. In this case, one Schwann cell harbors from 1 -12 small nerve fibers in grooves in its surface. The Schwann cell's plasma membrane does not spiral repeatedly around the fiber as it does in a myelin sheath, but folds once around each fiber and somewhat overlaps itself along the edges. This wrapping is the neurilemma (also called a mesaxon in unmyelinated nerve fibers). Also, gray matter of the brain and dendrites are unmyelinated, while axons are myelinated.
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 structure is responsible for myelination of the nerve fibers?
In the peripheral nervous system the cell that myelinates an axon is called a Schwann cell. In the central nervous system myelination is carried out by oligodendrocytes.
The insulating material produced by Schwann cells is known as what?
The insulating material produced by Schwann cells is known as myelin. Myelin forms a protective covering around nerve fibers, allowing for faster transmission of nerve impulses. This insulation is critical for proper functioning of the nervous system.
