
•Nongated or leak channels –Always open and responsible for permeability –Specific for one type of ion although not absolute •Gated ion channels –Ligand-gated •Open or close in response to ligand binding to receptor as ACh –Voltage-gated •Open or close in response to small voltage changes برای دانلود کل پاپورپوینت از لینک زیر استفاده کنید: ...