Action Potential

Hyperpolarization during an action potential is due to the slow closing of the voltage-gated K+ channels.

• TRUE

• FALSE

'Period A' is the Absolute Refractory Period of a nerve cell

• TRUE

• FALSE

A suprathreshold stimulus during 'Period B' will induce the production of another action potential.

• TRUE

• FALSE

During 'Period A' another action potential following stimulus at any strength cannot be produced because:

• Sodium channels are inactive.

• Too many potassium channels are opened

Tags

NGSS.HS-PS3-5

Phases A is

• Hyperpolarization

• Overshoot

• Depolarization

• Repolarization

Tags

NGSS.HS-PS2-5

Phases B is

• Hyperpolarization

• Overshoot

• Depolarization

• Repolarization

Phases C is

• Hyperpolarization

• Overshoot

• Depolarization

• Repolarization

The excitability of a cell is an ability of a cell to produce action potential following exposure to a stimulus.

• TRUE

• FALSE

During the repolarization phase of an action potential:

Efflux of potassium occur actively

• TRUE

• FALSE

During the repolarization phase of an action potential:

Influx of chloride occur.

• TRUE

• FALSE