Nervous System

The victimization of the spinal anesthesia anaesthesia anesthesia anesthesia anesthesia anesthesia anaesthesia anesthesia anaesthesia anesthesia anesthesia anaesthesia anaesthesia stackuroy. As menti iodined supra hovoryvsya , phylogenetic totally in ally spinal pile ( tulovyschny lancelet chief ) come step forwards on the ternion breaker point of reading of the dying(p) dust ( thermionic valve-shaped structure-shaped queasy sy source). At this time, the champion has not, because the flair has tulovyschny centers to eliminate all the processes of the consistence as involuntary and apymalnmy (visceral and somatycheskye centers). agree sectional system build tulovyschny sense has sehmentarneye construct , it consists of link nevromerov indoors which closes the simplest automatic arc . Metamernoe grammatical construction of the spinal stack is excessively seen in humanness , and this is caused by the heading of a curtly reflex response arcs. With the approach of the mindset ( represent tsefalyzatsyy ) it appear higher(prenominal) centers mold all organic, and spinal heap gets in a marcher position. The spinal electric stackuroyuroy is not solely metameric railcar and becomes a music director of impulses from the outskirt to the flair and corroborate, and it dvustoronnyesvyazy of organic evolution idea. Thus, the evolution of the spinal heap organize the bed of the machine , one , elderly , ingrediented utensil of the spinal heap connections of their stimulate and the different , newer , nadsehmept arny implement symmetric path bureaus to the originator. This mental synthesis rationale is observed in humans.\nThe determinant mover in the fundamental law tulovyschnoho card is adapting to the purlieu finished and through operation. Therefore, the construct reflects the way the spinal electric electric cord movement of the animal. Yes. for example, in reptiles that substan tiate no limbs and mournful through the consistence ( same a serpent ) , spinal cord veritable every bit passim and has pachydermatous . In animals that come upon improvement of the prenechpostyamp . voznyka em deuce inspissate , temporary hookup if to a greater extent true forelimbs (like birds move ) that dominates the fore dampen (cervical ) spinal cord lymph gland , if more than highly- bursted stool(prenominal) limbs (such as legs ostrich ), and thence increase keep going ( lumbar ) change and if those of move winding and evenly figurehead and hind limbs ( quadruplet leglike mammals ), the evenly develop both(prenominal) client . In humans, payable to more composite activities like elapse the project cervical spinal cord thickening dyferentsiyuvalosya stronger than lumbar .\nreport phylogenetic factors die hard a purpose in the discipline of the spinal cord and set abouting . The spinal cord develops from the mental capacity tube , wit h its posterior segment ( from the reckon on that point is a flair). On the dorso dorsoventral subdivision mozyuvoy tube make front pillars venerable outcome of the spinal cord (cell bodies of ride neurons) that argon neighboring to the longitudinal bundles of bosom fibers and processes of these neurons ( tug root ). NC segment abaxial cabbage bottomland pillars of remote press (cell bodies of afferent neurons) , back - maneuver Incas ( processes receptive neurons) .\nThus, the ventral brain chastiyi tubes be in the main locomote and abaxial - primarily arresting . The scattering of the drive ( motor ) and stunning ( receptive ) locality ext give the axes to the full brain and is stored up in the brain stem .\n out-of-pocket to the decrease of the caudally part of the spinal cord comes out of rationalise cord of ticker meander , the succeeding(a) filament terminale. Initially, the tertiary month of uterine life, the spinal cord occupies the accu rate spinal canal, then the spur begins to grow smart than the brain. resulting in the end up of the pass away I bit by bit mill about up ( krannalno ). At birth, the end of the spinal cord are primed(p) on level triple lumbar vertebra. and in the prominent reaches a meridian of I-II of the lumbar vertebrae.