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Nerves

Nerves are thread-like structures that form a network of pathways that transmit information from the brain to the body and the body to the brain, in the form of electrical impulses.

1,605 Questions

Where are S1-5 nerves?

S1-5. These nerves enter through the sacral or pelvic vertebrae.

Do dendrites receive chemical or electrical messages from other cells?

both, but usually biochemical since the synaptic gap is normally too wide for bioelectrical signals to cross.

Does the Vagus nerve carry nerve impulses that decrease the heart rate?

The vagus nerve releases the neurotransmitter, aceytlcholine, that slows down the heart rate. It is not the nerve impulses per se that do this, rather it is the the release of transmitter and it's interaction with post-synaptic receptors that have this effect.

What is responsible for transmission of nerve impulse across a synapse?

NEUROTRANSMITTER is responsible for transmission of nerve impulses.Eg.dopamine,acetylcholine etc.

Do unmyelinated fibers transmit slowly?

Yes, myelinated axons are much more effective.

Can you fix the phrenic nerve?

The phrenic nerve may be fixed if damaged, but one of the only successful treatments is surgery. Recovery may take a long time, depending on the person's immune system.

How do you heal radial nerve damage in cats?

Go to the vet.

Prognosis depends on the severity of the damage. See here for further info:

http://www.peteducation.com/article.cfm?c=0+1321&aid=3539

Could an injury to the wrist cause a piched nerve to the cervical area?

Thank you for your question. My answer is "No."

However, an injury to the cervical spinal nerves or those even lower, like an injury to the axillary (armpit) nerves or those in the elbow region can cause the symptoms of a pinched nerve with pain in the wrist. Pain would be located at the nerve injury or down the limb from the injured nerve. The only way a wrist injury could possibly cause a pinched nerve to your cervical region is if your wrist injury caused you to hold your wrist in a position that would strain your neck and pinch the nerves there. Very difficult to do.

Where is the hillock of the neuron?

The nerve cell hillock is the beginning of the axon immediately after the soma. This is where the action potential originates.

How does loss of nerve cells impact on the development of dimentia?

brain cells needs to communicate with each other by sending the message

between cells in the form of electrical signals so if the nerve cell dies message wont reach the other cell causing dementia.

What is the location of the epineurium connective tissue covering?

The epineurium is the last membrane in a nerve, and surrounds all the fascicles

Why are reflexes automatic?

Don't know, don't care, don't count on it.