8. Fill in the Blanks:

A nerve ____ is generated when a nervereceives a stimulus above ______.

During the depolarization of a nerve cell membrane, ______ ionsmove into the neuron.

During the repolarization of a nerve cell membrane, _______ ionsmove out of the neuron.

Following an action potential the short period of time whensodium gates cannot open is called the _____ period. After thistime, the ______ pump will ______ transport _____ ions into theneuron and ________ ions out of the neuron to re-establish the________ potential

A nerve ________ is generated when anerve receives a stimulus above ________.

During the depolarization of a nerve cell membrane, _______ ionsmove into the neuron.

During the repolarization of a nerve cell membrane, ________ions move out of the neuron.

Following an action potential the short period of time whensodium gates cannot open is called the _____ period. After thistime, the ______ pump will ______ transport ________ ions into theneuron and _______ ions out of the neuron to re-establish the_______ potential.

9. Explain in a short paragraph why myelinated nerves carryimpulses much faster than unmyelinated nerves. Use the followingterms in your explanation: Schwann cell, saltatory conduction,Nodes of Ranvier, action potential, myelin sheaths, sensory andmotor neurons.