Nerves are bundles of the long, tubelike extensions of nerve cells. Impulses traveling through them carry information throughout the body. Nerve impulses travel only in one direction. A message will, for instance, be sent to the brain from the fingertips through one nerve, and the message from the brain back to the fingers will be sent through another. Nerve cells are called neurons, and each has a cell body, branches called dendrites, and an axon. It is separated from the next nerve by a small gap called a synapse. Each neurone contacts the next in the nerve chain by releasing a chemical called a neurotransmitter from the end of the axon. This crosses the synapse and carries the message to the next neurone. The neurotransmitter found at the synapses of most peripheral nerves is called acetylcholine, although at some autonomic nerve synapses the transmitter is noradrenaline or dopamine.What Nerves doThe action of the nerves, which is moderated by the neurotransmitters, is a sensitive process that can be increased or decreased as needed. And because the chemical structure of many of the neurotransmitters is known, they can be used as drugs to modulate some of the most important actions of the nervous system. There are also many drugs that act by simulating the action of neurotransmitters, by modifying their action or by blocking their receptor sites.The CNS acts as a central computer to the rest of the body. It receives sensory information from the organs of the whole body, such as the ears and eyes, skin, and joints. It analyzes this information and then sends out the appropriate motor response to various muscles, such as those controlling speech or internal organs.The Two SystemsThere are two main divisions within the PNS: the somatic nervous system, which controls the muscles responsible for conscious or willed movement, such as speech or walking; and the autonomic nervous system, which controls involuntary body functions, such as sweating or shivering in response to cold. Organs and glands are influenced chiefly by the autonomic nervous system, which is divided into two areas: these are the sympathetic nervous system and the parasympatheyic nervous system. Most of the time, these two in balance, but the sympathetic system will dominate during periods of excitement or fear by stimulating functions such as the heartrate or breathing, as if preparing the body for a fight-or-flight response, as if contrast, the parasympathetic system is concerned with everyday functions and dominates during sleep.Sensory nerves carry information from the sense organs and other body receptors to the central to the central nervous system - the brain and spinal cord - for processing. Then motor nerves carry the processed information from the central nervous system to the gland, muscles to intiate a change.
Of The Nervous System
This can be flaccid paralysis, perhaps the result of a severed nerve, which leaves the muscles floppy and without sensation, or spastic weakness of paralysis, when the muscles become rigid due to nerve damage in the brain or spinal cord, perhaps following a stroke. Paralysis can be either temporary or permanent. In diseases such as Parkinson's or MS, there may be weakness without paralysis.NeuritisNumbness, tingling, pain, or muscle weakness due to the degeneration of nerve tissue, neuritis is caused by inflammation, disease, or damage. Symptoms vary according to whether it is the sensory nerve fibers or motor nerve fibers that are affected. Alcoholism may exacerbate the condition.TreatmentThis depends on the underlying cause and severity of the damage. Specific causes include diabetes, which can be treated by rebalancing the body's sugar metabolism.Naturopathy Treatment will be aimed at addressing dietary deficiencies, boosting vitamin intake and energy levels. Excessive alcohol consumption can also be treated with naturopathy to regulate diet.Diet and Nutrition Restoring the body's natural chemical dehydroepaindrosterone (DHEA) may also help Optimum levels are 750-1250ng/dL for men, 550-980ng/dL for women. Supplements of 50-100mg per for men, and 20-75mg for women may be recommended.Herbal Medicine, Aromatherapy, Homeopathy, and Yoga, These have been found helpful.NeuralgiaNeuralgia is pain in a particular' and is due to nerve damage, irritation, or pressure. The pain usually lasts for only a brief period, but may be severe and is often described as a shooting sensation. It is a symptom of shingles, which is an infection of the nerves leading to areas of the skin; for instance, down one side of the trunk, neck or arm, or, more rarely, the face. Postherpetic pain, which is pain following a herpes zoster infection, is caused by damage to the nerves, which results in repeated, strong nerve impulses being produced and sent to the brain. The pain is severe and can last for weeks or months.TreatmentAcupressure Trigeminal neuralgia, a spasmodic pain on one side of the face, can be self-treated by lightly pressing inward with the index fingers, just below the inner side of the brow, or from the same point, downward to the mouth. Neuralgia accompanying migraine can also be treated with light pressure or acupuncture.Biofeedback and Homeopathy Remedies and biofeedback may be used to prevent stress, which may bring on attacks of neuralgia.Acupuncture Particularly when used early on, this has been shown to prevent postherpetic neuralgiafollowing shingles.Tens Transcutaneous Electrical Nerve Stimulation This therapy uses electrodes to block these nerve impulses and stimulate the release of endorphins, the body's natural pain-relieving hormones, and is also particularly useful for pain following an attack of shingles , and for other forms of neuralgia or face pain.Aromatherapy, Chiropractic, Traditional Chinese Medicine, Hypnotherapy, Naturopathy, and Osteopathy have also proved beneficial.
Ricky Hussey has sinced written about articles on various topics from Lose Weight, Diet Pills and Japan Car. Read out for . Check out. Ricky Hussey's top article generates over 450000 views. to your Favourites.
Converting Real Audio To Mp3 It doesnt matter if you are just starting. Dont get too motivated by the statistics that big and known real estate business owner have because if they have managed to do so, you can do it too