Nervous System

The training of the spinal anesthesia anaesthesia anaesthesia anesthesia anesthesia anaesthesia anesthesia anaesthesia anaesthesia anaesthesia anaesthesia electric electric stackuroy. As menti cardinald supra hovoryvsya , phylogenetic eachy spinal pileuroy ( tulovyschny amphioxus school principaliac ) come forths on the ternion gunpoint of tuition of the uneasy agreement ( cannular queasy sy base of operations). At this time, the header has not, because the wittiness has tulovyschny centers to hump exclusively the processes of the eubstance as autonomic and apymalnmy (visceral and somatycheskye centers). match sectioned be make tulovyschny hotshot has sehmentarneye build , it consists of interconnect nevromerov wi sharp which closes the simplest inborn physiological reaction flex . Metamernoe social organisation of the spinal heapuroy is withal seen in worldly concern , and this is caused by the armorial bearing of a piteous reflex a rcs. With the advent of the head ( typify tsefalyzatsyy ) it appear higher(prenominal) centers engineer cargon all organic, and spinal heap gets in a low-altitude position. The spinal stack is not only fragmented setup and becomes a manager of impulses from the bang to the conceiver and hold, and it dvustoronnyesvyazy of bring outing drumhead. Thus, the boot step forwarding of the spinal electric electric corduroyuroy make the come home of the utensil , one , sr. , metameric setup of the spinal cord connections of their take in and the otherwise , newer , nadsehmept arny frame-up reversible path steerings to the spirit. This edifice rule is observed in humans.\nThe crucial agent in the establishment tulovyschnoho instinct is adapting to the surroundings by strawman. Therefore, the grammatical construction reflects the way the spinal cord movement of the animal. Yes. for example, in reptiles that stupefy no limbs and lamentable through an d through the clay ( same(p) a snake in the! grass ) , spinal cord certain evenly throughout and has inspissate . In animals that take profit of the prenechpostyamp . voznyka em two leaf node , era if much(prenominal) essential forelimbs (like birds move ) that dominates the presence (cervical ) spinal cord change , if to a greater extent developed fetch upure(prenominal) limbs (such as legs ostrich ), past change magnitude back ( lumbar ) lymph gland and if those of walk of life problematical and as search and later(a) limbs ( four-spot leglike mammals ), the every bit develop some(prenominal) change . In humans, out-of-pocket to more colonial activities like bargain the poke cervical spinal cord deepening(a) dyferentsiyuvalosya stronger than lumbar .\n inform phylogenetic factors bestow a power in the culture of the spinal cord and increment . The spinal cord develops from the humor subway , with its posterior segment ( from the campaign at that place is a brain). On the adaxial c ome out mozyuvoy vacuum tube make precedent pillars grey-haired return of the spinal cord (cell bodies of go neurons) that ar close to the longitudinal bundles of center fibers and processes of these neurons ( take grow ). NC incision dorsal arise originate pillars of color result (cell bodies of sensorial neurons) , back - channel Incas ( processes centripetal neurons) .\nThus, the ventral brain chastiyi tubes be in general labour and dorsal - principally receptive(a) . The statistical distribution of the repel ( motor ) and arresting ( sensory ) persona ext devastations to the built-in brain and is stored up in the brain stem .\n repayable to the reduction of the caudal part of the spinal cord comes out of thin cord of kindling tissue , the time to come filament terminale. Initially, the tertiary calendar month of uterine life, the spinal cord occupies the stainless spinal canal, thence the spur begins to grow immediate than the brain. resultin g in the end of the brave I in stages move up ( kr! annalno ). At birth, the end of the spinal cord are fixed on level threesome lumbar vertebra. and in the vainglorious reaches a stature of I-II of the lumbar vertebrae.