Ligand-gated channel

Definition

A ligand-gated channel is a type of ion channel in the cell membrane that opens or closes in response to the binding of a specific chemical messenger (ligand), such as a neurotransmitter. This action allows ions to pass through the membrane, influencing the cell's electrical charge and signaling.

Related terms

Action potential: A rapid increase and decrease in membrane voltage in an active neuron, resulting from sequential changes in ion conductances.

Neurotransmitter: Chemical substances released by neurons at synapses that transmit signals to other neurons, muscle cells, or gland cells.

Ion: An atom or molecule with an electrical charge due to the loss or gain of one or more electrons