Assertion: pacemaker's sensor | /r/Synonym | voltage-gated ion channels
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text: Stimuli, which can either come from outside the cell or from within the cell, can include the binding of a specific molecule to a receptor on the channel (also known as ligand-gated ion channels) or a change in membrane potential around the channel, detected by a sensor (also known as voltage-gated ion channels) and can act to open or close the channel.