Nervous system
The nervous system and also called nervous: is the most important devices that characterize the animal kingdom. When watching all organisms starting from mononuclear cells and even mammals where it is composed of simple circuits between small groups of nerve cells when the cells and monocytes, and increasingly complex whenever went up the ladder of evolution to reach the maximum complexity and efficiency in humans.
Nervous system, internal communications network in the animal's body, help him to adapt to environmental changes surrounding it. It has every animal except the initial Statistics animals some sort of neurological devices.
Invertebrate animals have a system nervous ranges from simple networks of nerves and nervous system regulator linked to a primitive brain. As in humans and vertebrate animals, the nervous system consists of the brain and spinal marrow and nerves. This article is concerned with the nervous system in humans.
Created man and provided a very sophisticated brain does not work efficiently Adaneha any computer to help him in pronunciation, and resolve all the fortune of the difficulties, and the development of a lot of creative ideas magnificent.
And the nervous system in humans several ways to facilitate the transmission of information and sensations from the surrounding environment to human beings to the brain, which sends the orders and instructions to the muscles of the body, to respond to that information. These commands and to walk ways is that the hyphen Sketha information to the brain. As well as the respect of the organization of the nervous system many of the body's internal functions, such as breathing and digestion and pulse cardiac operations. The device nervous responsible for what he is doing all of human movements, ideas, emotions and feelings.
The functioning of the nervous system through dense communications across synapses located on the ends of the axon and dendrite reticulum nerve neurons, which provides for each receive information, processed, and issuing instructions.
The nervous system to receive information from the external environment by members of sensation and internal organs by sensory deployed in the joints, muscles and viscera receptors, where that information addressed very quickly, so they can be either stored as Memory and experience or issue orders to other organs of the body in proportion to Allwardh.alkhalih information Home is a neuron, or nerve cell is called, which plays a key role in all the activities of the brain.
Some animals when they are devoid of the basic component of the nervous system, called the brain, the nervous system is incapable of forming thoughts or feelings show. Thus the brain is particularly nervous system responsible for "revival" (breathe life) in animals (all that distinguishes this life from events) (considered sponges exception in this area general), and for the same reason, the toxic chemicals that disrupt the work of the nervous system caused a rapid then paralysis of death many times.
Nervous system of vertebrate animals usually divided into central nervous system and peripheral nervous system. Central nervous system consists of the brain and spinal cord. While the peripheral nervous system consists of all the neuroses and neurons that do not fall within the scope of the central nervous system in. The vast majority of so-called nerves (which is the central nerve cells) are among the peripheral nervous system extensions. The peripheral nervous system can be divided is usually divided into physical nervous system and a nervous self.
Physical nervous system is responsible for directing the nervous system of the body and movements also receive external stimuli. The self is a separate part works on the organization of the internal functions of the body.
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