Midbrain ( diencephalon , dientsefalon) – it is difficult org and nizovannaya brain structure that takes part in the implementation Various hours GOVERNMENTAL brain functions, including as a component of sensory, motor and autonomic systems of the brain, providing an integrated activity of p -organisms.
The diencephalon is the largest part of the brain stem. He pa of Viva of cerebral second bladder (step five brain vesicles). The phylogenetically older region, the hypothalamus, or the hypothalamus, forms from the lower wall of this brain vesicle. Sidewalls bladder significantly increased in volume and become thalamus or sp and Tel’nykh hillock and metathalamus (both of these structures are f and logeneticheski newer formation). From the upper wall of the bubble mod and form a roof and epithalamus 3rd ventricle. Thus, the composition etc. of the diencephalon includes brain structures that are located in a circle of the third ventricle. The side walls of the ventricle are formed thalamus, lower and inferolateral wall – hypothalamus (hypothalamus v cm), top wall – and vault epithalamus which contains iron DNAs m renney secretion (epiphysis).
Thalamus (thalamus) is a large are wrong s no-egg-shaped cluster of gray matter, the divided pass for the first kami protein substances on a large number of cores – centers sunrise I boiling afferents. From a functional point of view, some of the nuclei m and lamusa performs sensory function, other core assembles are n Tammy propulsion system, and the remaining components are VEGETO and tive and limbic systems. Among the thalamic sensory nuclei are three groups of nuclei – specific relay or changeover and Tel’nykh, nucleus, or a projection (deliver sensory information according w Suitable projection cortex), specific associative (Grain and TYVA sensory information and deliver it to about associative b domain of the cerebral cortex) and nonspecific activating projection and associative cortex due to incoming ce n weed signals. In general thalamus nuclei comprising up to 120, which are connected to m th forward a vnutritalamicheskimi fibers.
Metathalamus presented geniculate bodies – medial and Latin e -sectoral. These cores have rear portions disposed in meth as the thalamus, and the front portion, disposed in the lower thalamus. Their Neira of us are part of the hearing (medial geniculate body) and visual (lateral geniculate body) tract. Kernel metathalamus are lo n weed specific relay, or switching, cores, as well as to the touch associative nuclei.