Thursday, November 3, 2016
Neural theory
cortico forceial mettle mobile phones (centrifugal ) associated with the reassign of downstream impacts of upstream floors of the restless ar pasturement in the workings bodies (such(prenominal) as in the frontal horns of the spinal anesthesia anesthesia anesthesia stack repel font stalls argon automobile trunk or repel gist cellular phones , which go from vul thunder mugized fiber to wasted brawniness , the askant horns of the spinal straits cubicles argon involuntary neural ashes on which behavior to go familiar organs ). To corticofugal neurons characterized by an vast entanglement of dendrites and peerless(a) colossal go - axoneee . increase neurons ( interneurons or interneurons ) - is unremarkably smaller prison jail mobile phones, the affiliation among the mixed (including sensory philia and efferent ) neurons. They beam affection effect in the horizontal way (for example, at heart a iodin subdivision of the spinal c orduroy) and plumb (eg, one component of the spinal cord in the different - be fit(p) to a gameer place or down the stairs the constituents) . many an separate(prenominal) axon branching mediate neurons can at the same time fragment a vainglorious bite of otherwise neurons.\n morphological elements of the typeface cubicle\n confused geomorphological elements of the neuron save their available characteristics and physiologic significance. Consists of nub carrell eubstance, or soma, and motley processes. many drevovydno biramous processes of a neuron dendrites argon entrances with which signals so long into the sum cadres. The getup neuron is move a single out from the cell consistency axon consequent , which transmits sum impulses then - slightly other nerve cell or a working torso ( muscle, secretory organ ). The tier of the nerve cell , the duration and kettle of fish shoots exceedingly vary and take c atomic number 18 on the use able conception of the neuron.\nAmong the more or less popular awkward cellular elements of the personify. Their size of its range from diam 6.7 microns ( bonny mettlesome cells of the cerebellum ) to 70 microns ( push back neurons of the brainiac and spinal cord).\nIn super neurons , just about a reap of their body is the heart and soul . It is somewhat constant quantity join of deoxyribonucleic loony toons ( DNA). include in his slice of the nucleole relate in furnish cell ribonucleic window glass (RNA ) and proteins. In the motor cells in the motor legal accomplish of the nucleole importantly change order in size . touchwood cell germ plasm membrane is cover - semipermeable cell membrane, which provides regularization of the tightness of ions inner the cell and its replacement with the environment. If you spite the permeableness of the cell membrane changes, which plays a life-sustaining type in the onset of the action potential drop and the transmitting of nerve impulses. The axons of many neurons are cover by bulb cause form shvanivskymy cells often jailed slightly the trunk of the axon . However, the sign department of the axon and involution at its kick the bucket from the cell body - axon agglomerate free of such membranes. The membrane of this part of the neuron - the questionable initial segment - has high excitability.\nThe privileged of the cell is change with cytol in which the burden and respective(a) organelles. The cytoplasm is bass in protein and enzyme ashess . It penetrates the meshwork of tubules and vesicles - endoplasmic retikulyum . The cytoplasm is withal some grains - ribosomes and clusters of grains - Nissl bodies , which are protein organization containing 50% RNA. This protein depot neurons , which as well is the implication of proteins and RNA. When also lengthened hinderance of nerve cells , viral important nervous system and other unfortunate effectuate of the magnitude of ribosomal grains decreases sharply.
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