Schwann cells are functionally similar to oligodendrocytes.
Glial cells called Schwann cells surround neurons, keeping them alive and occasionally encasing them in a myelin sheath. The peripheral nervous system contains Schwann cells, but the central nervous system contains oligodendrocytes, which are comparable cells. In addition to providing nutrition and oxygen to neurons, insulating the paths between nerves, and preventing infection, these cells wrap nerves to keep them in place.
Via the passage of an electrical impulse through their cell membrane, nerves function. The signal is transmitted chemically to the subsequent nerve cell after traveling the full length of the nerve cell. Because this requires a lot of energy and a unique structure, nerve cells are unable to absorb it.
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