Nervous system of the person has complex, polysynthetic structure and performs a number of the vital functions which regulate and coordinate activity of all organism.
It is required to you
- Scheme of nervous system of the person.
Instruction
1. Nervous system is divided into peripheral and central. The head and a spinal cord concerns the last – from these bodies the nervous fibers penetrating all body disperse. All y nervous system are structural unit neurons. The nervous fibers and knots dispersing on all organism are included into a peripheral system which provides interaction of a brain with glands, muscles and with sense organs. Respectively, each of two types of nervous system performs the functions. Also conditionally nervous system is divided into somatic (animalny) and vegetative.
2. The first is responsible for receiving the incentives arriving from the outside world, their coherence and coordination of movements. It operates muscles of a skeleton, language, a throat and a throat. Animalny or animal it is called because the sensitivity and movement are inherent only in animals.
3. The vegetative system consists of the sympathetic and parasympathetic section. The first is responsible for expansion of a pupil, increase of pulse, increase in pressure. Its work is controlled by the sympathetic spinal centers. The second section regulates work of a bladder, rectum, genitals and also operates a yazykoglotochny nerve.
4. The main functions of the central nervous system are allocated depending on that body (head or spinal cord) which means. In a general view the problem of the central system is to carry out reflexes, i.e. various reflective reactions. The brain is divided into intermediate and final. The first consists of a hypothalamus - the center of emotions, hunger, saturation, pleasure, heat exchange and heat production, a metabolism; the thalamus which is responsible for filtration and preprocessing of the arriving information; the limbic system forming behavior.
5. Basic function of the central nervous system is performed by special cages of a neuroglia which participate in a metabolism of cages. They create a special environment for neurons, providing momentum transfer.
6. Conduction function is born in itself by the white substance of a spinal cord representing a bunch of densely packed nervous fibers. It is some kind of binding thread between a head and spinal cord, parts, brain segments.
7. Conditioned-reflex function is performed by a cerebral cortex which represents the highest nervous activity. This function regulates work of all bodies and is the cornerstone of mental human activity.