Then, ion pumps pump the sodium back back out of the nerve, and the potassium back into the nerve, restoring the nerve to its normal resting state.

The facial nerve is the seventh cranial nerve, or simply cranial nerve VII.

Some people!

When the electrical impulse reaches the end of the nerve, small vesicles, or packets, containing chemical neurotransmitters, are released by the nerve and rapidly interact with the nerve's target.

This is called the nerve's resting potential.

The tumor cells always stay on the outside of the nerve, but the tumor itself may either push the nerve aside and or up against a bony structure (thereby possibly causing damage).

The end of the nerve, the end of the axon, communicates with the nerve's target.

And during this overshoot, the nerve is resistant to further depolarization it is refractory, which prevents the nerve electrical impulse from traveling backwards.

A twitch in a thumb, a nerve or a muscle.

Immunization against children's paralyses

This is the polio virus.

Yes. He had polio.

It is 20 times higher than in the fluid outside the nerve while that outside fluid has 10 times more sodium than the inside of a nerve.

The inside of a nerve is a fluid that is very rich in the ion potassium.

I haven't the nerve and strength for the sort of thing you want.

This is a polio vaccine.

(Video) Jon Stewart Where is polio still active?

End polio now.

Two eyes at the bottom, optic nerve flowing out from the back.

Or the nerve's target may be another organ, such as a muscle.

I learned they are the sinew which hold the force together.

The trochlear nerve (the fourth cranial nerve) is a motor nerve (a somatic efferent nerve) that innervates a single muscle the superior oblique muscle of the eye.

Pakistan s Polio Tipping Point

Poliomyelitis has been eradicated completely.

Polio is still a devastating, explosive disease.

The government and the opposition, they have been simply paralyzed.

The International Foundation for Optic Nerve Diseases (IFOND) sponsors research and information on a variety of optic nerve disorders and may provide general direction.

Keep your nerve, said the Voice. I'm an Invisible Man.

The vestibulocochlear nerve (auditory vestibular nerve), known as the eighth cranial nerve, transmits sound and equilibrium (balance) information from the inner ear to the brain.

As a part of the vagus nerve, it comes from the brain, passes through the neck down to heart, rounds the dorsal aorta and returns up to the larynx, again through the neck.

Pakistan s Winnable War on Polio

Most of the population has been immunized against poliomyelitis.

They were terrified of polio, and it would cause public panic.

Blindness, polio early detection, early response.

The actual nerve supplying the arm was severed, was cut, by say, a motorcycle accident.

This process is called synaptic transmission, because the connection between the nerve and the next object in the chain is called a synapse.

So we are really duplicating the kind of signals that you have on the optic nerve.

But, it turns out some component of stroke paralysis is also learned paralysis, and maybe that component can be overcome using mirrors.

Reform has stalled amid profound political paralysis.

Targeting anti polio efforts in Pakistan

Most of the population has been immunized against poliomyelitis.

Now giving the polio vaccine is simple.

We may see the eradication of polio this year.

But soon we may see polio eradicated.

And polio, I think, is one of the most powerful examples.