dentify why the membrane becomes hyperpolarized following the repolarization phase of an action potential.Multiple choice question.Voltage-gated K+ channels remain open for a short period of time after reaching RMP; allowing K+ to diffuse out of the cell.Voltage-gated Na+ channels remain open for a short period of time after reaching RMP; allowing Na+ to diffuse out of the cell.Voltage-gated Na+ channels remain open for a short period of time after reaching RMP; allowing Na+ to diffuse into the cell.Voltage-gated K+ channels remain open for short period of time after reaching RMP; allowing K+ to diffuse into the cell.

When thinking about an action potential which one of the following statements is TRUE?Question 10Answera.A stimulus changes the permeability of a "patch" of the membrane, and sodium ions (Na+) diffuse rapidly into the cell.b.During repolarization, sodium ions diffuse rapidly into the cell.c.If a stimulus is strong enough, hyperpolarization causes membrane polarity to be completely reversed, and an action potential is initiated.d.Ionic conditions are restored after repolarization by the actions of the sodium-potassium (Na+-K+) pump, whereby two Na+ ions are ejected for every three K+ ions carried back into the cell.e.The external side of the resting membrane is slightly negative, and its internal side is slightly positive.

Hyperpolarization occurs because voltage-gated Blank______ channels stay open longer than required to reach resting membrane potential. Multiple choice question.sodiumpotassium

Hyperpolarization, or afterpotential, occurs becauseMultiple Choicemore sodium ions diffuse into the cell than potassium ions diffuse out of it.the extra efflux of potassium ions causes the membrane potential to become slightly more positive than the resting value.the increased potassium ion permeability lasts slightly longer than the time required to bring the membrane potential back to its resting level.potassium ions continue to diffuse out of the cell after the inactivation gates of the voltage-gated sodium ion channels begin to close.the inactivation gates of the voltage-gated sodium ion channels begin to open, and the diffusion of sodium ions decreases.

What is produced when depolarization of a cell membrane reaches threshold?Multiple ChoiceA new action potential is produced.An existing action potential is stopped.Voltage-gated ion channels close.The absolute refractory period ends.

After the peak of an action potential, membrane potential repolarises. Which best describes the events over the next few milliseconds  membrane potential returns directly to resting potential (linearly)   membrane potential falls to a value more negative than resting potential   membrane potential returns to resting potential with a logarithmic decay   membrane potential returns to resting potential with an exponential decay   membrane potential falls to Potassium Equilibrium Potential