Ion Channel Receptors

Definition

Ion channel receptors are proteins that span the cell membrane and allow specific ions to pass through when they are open. They open or close in response to a signal molecule binding to the receptor.

Related terms

Voltage-gated ion channels: These are types of ion channels that open or close in response to changes in membrane potential.

Ligand-gated ion channels: These are types of ion channels that open or close in response to a specific ligand, such as a neurotransmitter.

Selective permeability: This is a property of cellular membranes that only allows certain molecules to enter or exit the cell.