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    GlossaryIon Channels

    specialized proteins in cell membranes that regulate ion flow

    Ion channels are specialized proteins embedded in cell membranes that allow ions (such as sodium, potassium, calcium, and chloride) to pass in and out of cells. These channels play a crucial role in various physiological processes, including nerve impulse transmission, muscle contraction, and maintaining the cell's electrical balance. They can open or close in response to specific signals, such as changes in voltage across the membrane or the binding of a chemical messenger.

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