The absolute refractory period assures that action potential propagation isMultiple ChoiceBlocked from certain areas of the cell membraneSpread at a prescribed speedCapable of spreading in either directionOnly in one direction

A recently depolarized area of a cell membrane cannot generate an action potential because of theMultiple Choiceabsolute refractory period.high concentration of sodium ions in the extracellular fluid.the high concentration of potassium ions in the cytoplasm.presence of receptor sites on the membrane.

What is a refractory period for a membrane?Multiple choice question.Initial part of an action potential when Na+ is rushing into the cell.Threshold potential needed to initiate an action potential.Period of time after an action potential when the membrane cannot send another action potential.

The inside of the cell membrane becomes negative at the time of an action potential.

The movement of a substance across a cell membrane against its concentration or electrochemical gradient.Group of answer choicespassive transportfacilitated diffusiondiffusionosmosisactive transport

The inside of the cell membrane becomes negative at the time of an action potential.Group startsTrue or FalseTrue, unselectedFalse, unselected