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

Which statement regarding refractory periods is true?Select one:Select the correct definitionThey allow neurons to fire an unlimited number of action potentials per unit of time.During the refractory period the cell requires a less intense stimulus to reach threshold.The refractory period arises in part due to the increase in sodium conductance across the membrane.The refractory period arises in part due to the decrease in potassium conductance across the membrane.The refractory period ends when the sodium channels are no longer inactivated

The _______ is a period of time when a membrane cannot respond to another stimulus (no matter how strong).Multiple Choiceall-or-none periodabsolute refractory periodrelative refractory periodafterpotential period

A refractory period is a time in which the plasma membrane becomes Blank______ to further stimulation.Multiple choice question.less sensitivemore sensitive

Which of the following helps create the refractory period for action potentials frequency in muscle and nerve cells?Group of answer choicesclosed activation gate on voltage gated sodium channelslag for restoration of resting membrane potential by sodium-potassium pumpinability to reach threshold potential for the cellclosed inactivation gate on voltage gated sodium channelsclosed gates on voltage gated potassium channels

What is produced when depolarization of a cell membrane reaches threshold?Multiple ChoiceThe absolute refractory period ends.Membrane receptors are exposed.A new action potential is produced.An existing action potential is stopped.