Difference Between Oligodendrocytes and Schwann Cells

The difference between Schwann cells and oligodendrocytes lies on the type of nerve cell axons they insulate. Schwann cells insulate the axons of the nerve cells in the PNS whereas oligodendrocytes insulate the nerve cells in the CNS.

How do Schwann cells differ from oligodendrocytes quizlet?

Schwann cells form sheaths around several axons, while oligodendrocytes form sheaths around only one axon. Schwann cells form a myelin sheath around a portion of only one axon, while oligodendrocytes can surround portions of several axons.

What do oligodendrocytes and Schwann cells do?

Oligodendrocytes and Schwann cells are engaged in myelin production, maintenance and repairing respectively in the central nervous system (CNS) and the peripheral nervous system (PNS).

What is the relationship between Schwann cells and myelin?

Schwann cells make myelin in the peripheral nervous system (PNS: nerves) and oligodendrocytes in the central nervous system (CNS: brain and spinal cord). In the PNS, one Schwann cell forms a single myelin sheath (Figure 1A).

Are Schwann cells in CNS or PNS?

Central nervous system (CNS) is composed of two major cell types: neuron and glia. ... Consistently, the CNS houses oligodendrocytes for myelin synthesis. On the other hand, Schwann cells are the myelinating cells in the peripheral nervous system (PNS).

Is there a difference in the way Schwann cells and oligodendrocytes Myelinate axons?

Schwann cells are the cellular counterparts to oligodendrocytes in the peripheral nervous system. Similarly to oligodendrocytes they form the myelin sheath. In contrast to the oligodendrocyte each Schwann cell is associated with only one axonal segment. ... The latter loosely enwraps several axons without forming myelin.

Where are Schwann cells found?

Schwann cells are a type of glial cell that surrounds neurons, keeping them alive and sometimes covering them with a myelin sheath. Schwann cells are present in the peripheral nervous system, whereas oligodendrocytes are similar cells found in the central nervous system.

What is the function of Schwann cells?

Schwann cells (SCs) are the major glial cell type in the peripheral nervous system. They play essential roles in the development, maintenance, function, and regeneration of peripheral nerves. In the mature nervous system, SCs can be categorized into two major classes: myelinating and nonmyelinating cells.

What is the function of oligodendrocytes cells?

Oligodendrocytes are the myelinating cells of the central nervous system (CNS). They are the end product of a cell lineage which has to undergo a complex and precisely timed program of proliferation, migration, differentiation, and myelination to finally produce the insulating sheath of axons.

Are oligodendrocytes glial cells?

Oligodendrocytes are another type of glial cells and these cells are responsible for the myelination of axons in the central nervous system (CNS).

Are Schwann cells in the brain?

Schwann cells are excluded from the CNS during development by the glial limiting membrane, an area of astrocytic specialisation present at the nerve root transitional zone, and at blood vessels in the neuropil.

How do Schwann cells repair damaged nerves?

Jacob explained that the Schwann cells induce the rapid disintegration of the axons that have been damaged by the injury to the peripheral nervous system. They break the axon cells into smaller fragments that could be gobbled up either by the Schwann cells themselves or by the scavenging macrophages.

What would happen without Schwann cells?

What would happen if there were no Schwann cells? A) Muscles would not be able to contract and the body would be paralyzed.

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