Nerves

in many cases yes

The mixture of axon types contributes to variety of responses generated. Specifically, the rate with which a response is made can vary.

because the superficial reflex fibres also come through the umn fibres along with it

sensory neuron har two part one is connect receptor which take al body sensory information and than neuron aftr that tract and finaly brain in relatd centr aftr that motor reaction occur this reaction occur in apathway.

ionic compounds

They quickly move their hand or arm, and scream 'aarrrgghhh!!!'

Or someone clever would go to the tap and immeidately run their hand or arm under cold water, until the pain starts to go away. This is to prevent any swelling or burns

The facial or 7th crainial nerve. If you have Bell's palsey, (CN 7 palsey) one side of your face will have problems closing your eye and controling that whole side of your face.

Take Care!

Dr. Dan

True

No. There is a synaptic cleft between the axon of one neuron and the dendrite of another neuron. At the synapse, a chemical messenger is needed - in order to carry the "message" from one nerve to the next, whereupon electrical transmission once again occurs (via depolarization and then repolarization).

a periodic production of action potentials even without synaptic input

They are eliminated when they are not used.

I do not know how Vitamin C could cause back pain. Vitamin C advocates state that it is is helpful in preventing and healing soft tissue injuries to the back including disc herniation. They also claimed that it helps prevent and cure kidney stones and various other kidney problems. Others state that Vitamin C claims are not supported by proper studies but they do not say that it is actually harmful.

this is in answer to a question regarding whether Vitimin C can cause back pain. It became appended to the wrong question and I could not delete.

100 billion

Stimulate

T1-12. These nerves enter from the thoracic or chest vertebrae.

Lesion

Neuromuscular Junctions

Found in: Human Anatomy & Physiology 8th Edition by Elaine N. Marieb and Katja Hoehn

Saltatory Conduction

In a regular nerve synapse, not exposed to any antigens and in a healthy body, inhibitory, or preventative, neurotransmitters are released constantly to prevent the release of dopamine (<----neurotransmitters), a natural painkiller(or mood-lifter). When the body is severely damaged or injured, natural opiates are released and travel to the inhibitory neurotransmitters. When the opiates arrive at the inhibitory neurotransmitters, they enter the opiate receptors. Once this occurs, the dopamine neurotransmitters can be released and travel to dopamine receptors, to travel through neurons to the rest of the body.

Once heroin is brought into the body, people feel a short, but immediate, high. The heroin simulates natural opiates. The heroin travels through the body to the inhibitory neurotransmitters and to the opiate receptors. Once the body has received the heroin, the inhibitory neurotransmitters are no longer released, at least until the heroin wears off. The dopamine is now released and the drug user feels a high from the effects of the dopamine.

There is a great source that explains not only the effects of heroin on the synapse, but several other drugs too.

Nerves do not have actions. Muscles do, but nerves go to certain receptors. The femoral nerve is the largest in the lumbar plexus and divides into many branches, and supplies the thigh muscles and leg and skin cutaneous receptors (feeling).

Yes,the membrane potential of a neuron is at rest because it is the difference in electrical charge between inside and outside a resting neuron.

Prawn or shrimp is the common name of Dendrobranchiata. Its nervous system consists of dorsal and ventral nerve cord connected around esophagus.

neurotransmitters

in the adult (probably male) human it is approx 2.6 centimeter, as stated in "Auditory evoked potentials" By Robert F. Burkard, Jos J. Eggermont, Manuel Don (see google books).