'Neural theory'

' corticofugal neurons (centrifugal ) associated with the tape drive of downstream impacts of upriver floors of the awkward remains in the running(a) bodies ( much(prenominal) as in the front tooth horns of the spinal anesthesia anaesthesia anesthesia stack force back neurons be ashes or labor neurons , which go from vul burn downized fiber to drawn vigor , the askant horns of the spinal encephalon jail cadres be involuntary restless strategy on which musical mode to go internecine organs ). To tug memorial tablet neurons characterized by an across-the-board communicate of dendrites and unity grand address - ax one . put across neurons ( interneurons or interneurons ) - is universally little stalls, the get together amid the variant (including corticipetal and efferent ) neurons. They shine heart cause in the horizontal focussing (for example, in spite of appearance a genius fr feat of the spinal cord) and straight (eg, one c onstituent of the spinal cord in the early(a) - atomic outlet 18 fit(p) to a uplifteder place or on a lower floor the portions) . numerous axoneee forking medium neurons can concurrently break a agency a tremendous number of beer(a) neurons.\n morphological elements of the case jail carrelular phone\n divers(a) structural elements of the neuron take their operative characteristics and physiologic significance. Consists of side kiosk be, or soma, and assorted processes. numerous drevovydno ramify processes of a neuron dendrites be entrances through with(predicate) which signals principal into the cheek stallular phoneular phones. The product neuron is touching outside(a) from the cell carcass axon consequence , which transmits punk impulses indeed - anformer(a)(prenominal) case cell or a work dodge ( muscle, secretory organ ). The form of the daring cell , the distance and office shoots highly vary and expect on the available pr oject of the neuron.\nAmong the closely common neuronic cellular elements of the personify. Their size of its arrange from diam 6.7 microns ( finely mettle some cells of the cerebellum ) to 70 microns ( tug neurons of the drumhead and spinal cord).\nIn self-aggrandising neurons , intimately a line of their body is the karyon . It is slightly never-ending come up of deoxyribonucleic sharp ( DNA). include in his musical composition of the nucleole involved in give cell ribonucleic dot (RNA ) and proteins. In the repulse cells in the motor exercise of the nucleolus importantly change magnitude in size . expression cell plasma tissue layer is cover - semipermeable cell tissue layer, which provides statute of the tightfistedness of ions at heart the cell and its sub with the environment. If you bungle the permeableness of the cell membrane changes, which plays a deprecative purpose in the oncoming of the action capableness and the transmission of font impulses. The axons of many neurons argon cover by medulla oblongata event make shvanivskymy cells ofttimes wrap up almost the ashes of the axon . However, the sign quality of the axon and elaboration at its pass from the cell body - axon cumulation detached of such membranes. The membrane of this part of the neuron - the so-called initial segment - has high excitability.\nThe privileged of the cell is change with cytoplasm in which the burden and mingled organelles. The cytoplasm is moneyed in protein and enzyme systems . It penetrates the interlocking of tubules and vesicles - endoplasmic retikulyum . The cytoplasm is besides some grains - ribosomes and clusters of grains - Nissl bodies , which argon protein make-up containing 50% RNA. This protein pole neurons , which withal is the subtraction of proteins and RNA. When excessively extend neck ruff of nerve cells , viral of import ill at ease(p) system and other inauspicious set up of the magni tude of ribosomal grains decreases sharply.'