During these stages of an action potential, identify whether the voltage-gated sodium (Na+) channels are open or closed:RepolarisationAnswer 1 Question 13DepolarisationAnswer 2 Question 13RestAnswer 3 Question 13Hyperpolarisation

The membrane potential at which voltage-gated sodium channels open is called .

When the voltage-gated potassium channels open, a large number of potassium ions Blank______ the cell, resulting in the Blank______ phase of the action potential.Multiple choice question.exit, depolarizationexit, repolarizationenter, depolarizationenter, repolarization

Check all that occur during the production of an action potential.Check All That ApplyLigand-gated ion channels close, preventing Na+ from entering the cell.Ligand-gated ion channels close, preventing Na+ from entering the cell.Neurotransmitters bind to ligand-gated ion channels, causing them to open.Neurotransmitters bind to ligand-gated ion channels, causing them to open.Voltage-gated K+ channels open, allowing K+ to move into the cell.Voltage-gated K+ channels open, allowing K+ to move into the cell.Voltage-gated K+ channels open, allowing K+ to move out of the cell.Voltage-gated K+ channels open, allowing K+ to move out of the cell.

oward the end of the repolarization phase, the Blank______ gates of the sodium channel close and the Blank______ gates of the sodium channels open.Multiple choice question.activation, inactivationinactivation, activation

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.