luuüdist pärinev põhiliselt membranoossete jätketega rakk, mis esineb enamikus organites ja epiteelkudedes

a current that is independent of time. By extension, a current in which the direct component is of primary importance., current which flows in one direction only, although it may have appreciable pulsations in its magnitude, ajas muutumatu suunaga kestev elektrivool

elektrivool, mille tugevus ja suund ajas ei muutu