Nerve Impulse

Front

What is the insulating membrane that surrounds parts of the axon that helps to protect & propagate action potential?

Back

Myelin Sheath

Front

Returning back to the resting phase is called -

Back

Repolarization

Front

When a neuron is resting, the inside of the axon has a ____________ charge.

Back

Negative

Front

What number on the graph represents the Hyperpolarization phase?

Back

4

Front

Which ions are involved in the electrical nerve impulse?

Back

Potassium and Sodium

Front

What is the primary function of the myelin sheath?

Back

To insulate the axon and increase the speed of nerve impulse transmission.

Front

Define depolarization in the context of nerve impulses.

Back

Depolarization is the process by which the membrane potential becomes less negative (more positive) during the action potential.

Front

What role do sodium ions play in the generation of an action potential?

Back

Sodium ions rush into the neuron, causing depolarization and the initiation of an action potential.

Front

What is hyperpolarization?

Back

Hyperpolarization is the increase in membrane potential, making the inside of the neuron more negative than the resting potential.

Front

Explain the term 'resting potential'.

Back

Resting potential is the electrical potential difference across the membrane of a neuron when it is not actively transmitting an impulse.