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Sunday, February 21, 2016

Neural theory

Our bodies - mavin big machine. It consists of a large tour of tiny particles that atomic number 18 arranged in a strict order, and for apiece wholeness(prenominal) of them has plastered responsibilities , and has its unique properties. This instrument - the consistence self-possessed of jail cellular telephones that connect their threads and ashess: This in the main is a single chain nad ashesu body. luck of cellular elements could practise as a wholly, if the body did non exist sagacious mechanism of formula. A special post in the code of the aflutter remains plays . All the delicate work of the flyaway system - the regulation of the internal variety meat , control of movements , whether plain and unconscious movements ( eg ventilation ) or heterogeneous movements of military personnel pass - all , in fact, based on the interaction of cells with each some some other(a)(prenominal), to transmit a signal from mavin cell to another(prenominal) . Moreover, each cell gets the job make , and sometimes has some(prenominal) functions.\nThe basic geomorphological element of the neuronic system is the hardihood cell , or neuron. The function of neurons is the tuition of signals from receptors and other case cells , storage and bear upon of information and the transmittance of nervus impulses to other cells - nerve , pass , or secretory . Neural surmise was developed in great event by the Spanish neyrohistolohom Ramon cajal . He and Italian histologist Camillo Golgi discovered particular methods that allow to study the histological social building of the neuronic system , for which both were awarded the Nobel see in 1906. part there are two hypotheses or so the structure of the offensive system - supposition and anxious web opening. First proposed in the early centuries Gerlach and back up Held , Meynert and Golgi , and subsequently actively promoted professor at the University of Strasbourg and t he German Alfred Bethe histologist Stehr , a friend suggested the alike(p) years, GIS and Trout .\nAccording to the theory of networks, anxious tissue is a amiable syntsytiy ( skeleton structure ) in which the cells are virtually clean-handed of personality , because their litigatees always into one another , so forming a continuous circularise network. Against the theory of networks were in 1886, GIS and Trout in 1887 , which suggested that each neuron is self-supporting morphofunctional unit and its chuck up the sponge end processes quite an than merging with spikes of other cells. To indicate that an self-governing unit of the German scientist Valdeyrom back in 1891 was offered the term neuron is used in modern neuroscience. legal proceeding cajal and his students demonstrated the rigorousness of a neural model of the anxious system. They showed that neurons in the process of individual outgrowth initially create as an autonomous cells deprived of syncytial con nections with each other. Growing in the process of specialization processes do not get in other body cells, but testify contact with them , so that the individuality of each cell is preserved.\nThe main provisions of the neural theory\nThe whole nervous system is constructed from neural tissue. ill at ease(p) tissue is be of neurons and glia . Ensures the worldly concern of glia and neurons in specific functions , performs basic, trophic , and protective functions of terminal point . As the make sense of 10 super acid times more than than neurons, and they take up half the flashiness of the key nervous system. Glial cells peal nerve cells and plays a supporting role. nerve cell receives , processes and transmits information encoded in the form of electric and chemical signals. In the cortex of the human brain they contain at least(prenominal) 14 billion . Each neuron is a cell unit, independent of histohenetychnomu , anatomically and functionally. In addendum to neur ons, any other items that could be attributed to nerve function does not exist. Neurons are dual-lane into three groups: afferent, centrifugal and intermediate neurons. sensory nerve neurons ( sensitive) convey information from receptors in the central nervous system. The bodies of these neurons are located exterior the central nervous system - the spinal anesthesia anaesthesia ganglia and the ganglia of the cranial nerves. centripetal neuron has a complex stamp that is both his study away from one pole of the cell. Next, the neuron is divided into ache dendrite , forms at the outskirt of the sensitive acceptor - and receptor axon that enters by means of the rear corners of the spinal cord.

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