Shapes and Roles of Glial Cells

Item #7 of 10

Oligodendrocytes differ from Schwann cells in that __________________.

oligodendrocytes occur in the peripheral nervous system, whereas Schwann cells occur in the central nervous system;

each oligodendrocyte forms multiple myelin sheaths, whereas each Schwann cell forms only one myelin sheath;

oligodendrocytes are composed primarily of fat, whereas Schwann cells are composed primarily of protein;

oligodendrocytes serve as axon insulators, whereas Schwann cells act as conductors of current flow;

none of the alternatives is correct;

INCORRECT - Both oligodendrocytes and Schwann cells serve as axon insulators and thereby increase the rate of signal transmission.

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		oligodendrocytes occur in the peripheral nervous system, whereas Schwann cells occur in the central nervous system;
		each oligodendrocyte forms multiple myelin sheaths, whereas each Schwann cell forms only one myelin sheath;
		oligodendrocytes are composed primarily of fat, whereas Schwann cells are composed primarily of protein;
		oligodendrocytes serve as axon insulators, whereas Schwann cells act as conductors of current flow;
		none of the alternatives is correct;