The peripheral nervous system

peripheral nervous system contains nerves, cranial and spinal nerve centers located in their course (ganglia).It connects to the internal organs, skin, muscles and the central nervous system (CNS).On the basis of this connection, the peripheral nervous system is of two kinds: the autonomic and somatic.The latter is formed by those nerves that connect the CNS to the muscles, skin and tendons.By the autonomic nervous system includes those nerves that connect the CNS to the glands, blood vessels and internal organs.

sensory nerve fibers together with movement up the spinal nerves.On the skin, the muscles, the mucosa, internal organs, tendons located receptors.These formations are the beginning of sensory fibers.They send signals that contain data about the condition of the body and its environment, in the CNS.According to the motor fibers, on the contrary, the CNS sends vessels, internal organs, muscles signals.Thus it controls the body's response to certain stimuli are perceived by receptors.

Twelve pairs of cranial nerves are connected to the brain.Thanks to them, remain sensitive nasal cavity and mouth, throat, mucous membranes of eyes, facial skin.They also provide a connection with all of the central nervous system receptors hearing, taste, sight and smell.This somatic fibers and autonomic control the functioning of the glands (and lacrimal and salivary), are also involved in the process of respiration, the heart and the digestive system.

peripheral nervous system should be quickly delivered to the CNS motor or sensory impulses.It is essential to ensure a quick connection between the brain of the head, back and receptors.

The peripheral nervous system is subject to a considerable number of human diseases.The reasons for their different: poisoning, trauma, pinched nerves, circulatory problems or metabolic inflammation.Often there is a combination of several factors.

classification of these diseases depends on what is affected portion of the peripheral nervous system.If the end of the spinal cord become inflamed, sciatica occurs if the affected nerve plexus - pleurisy.Most peripheral neuropathy manifested complex symptoms.So, if you suffer from spinal cord section, there plexitis, radiculitis.They are accompanied by pain in the direction of the nerve trunks, reduced the sensitivity of the skin in this area, there is a weakness in the muscles, they gradually atrophy.The manifestations of the same, changing only the location of the lesion.

But if damaged any of the cranial nerves is a breach of the perception of visual images, sounds and smells, but there is no pain, loss of sensitivity.The peripheral nervous system has several departments, so and treatment depends on the cause, they were called, and on which it struck land.After careful examination the doctor prescribes drugs fizioterapevtichekie procedure.Depending on the severity of the patient offer a stay in a hospital or day clinic.Surgery is only applicable in case of rupture of the peripheral nerves resulting from trauma.

Disease prevention is in compliance with safety regulations at work with poisons.Avoid hypothermia.Diabetics to warn diabetic polyneuritis should regularly visit the doctor and take special preventive course.Particularly susceptible to defeat the system, smokers and alcoholics.