What are the main parts of the nervous system?
parts of the nervous system, a system of body that oversees the function of all other systems, includes its main organ, the brain; its blood vessels, spinal cord and peripheral nerves; and its cells, known as neurons that transmit electrical signals that are nerve pulses. The nervous system can be divided into two subsystems: the central nervous system includes brain and spinal cord, as well as retina and peripheral nervous system includes all the nerves that leave the spinal cord to travel on the body, transmit signals between the body and the brain such as motor and sensory impulses. In addition, the peripheral system has a subdivision known as an autonomous nervous system that controls involuntary visceral functions such as heart rate, salivary and sweating.
From different parts of the nervous system, the brain can be considered a control center. To occupy a large part of the head in humans and protected the skull of all vertebrates, just where nerve impulses come, in the case of voluntary functions such as picking up the book. This is also the place where jThey are interpreted, like when a person feels that the plate is hot, and it recognizes the brain that tells one to rip her out. As part of the central nervous system, which coordinates all body function and behavior, it receives information from the peripheral nervous system about what is happening inside and outside the body, and responds appropriately.
The brain does this by transmitting and receiving nerve pulses through the spinal cord, part of the central nervous system that directs them to and from the peripheral nervous system. The scheme, protected by a vertebral column, is a dense bundle of nerves and glial cells that form a protective cover around them, similar to the rubber housing for an electric cable. It is between a part of the nervous system that is responsible for the transmission of nerve pulses, which means both sending information from the brain to the peripheral nervous system and getting information from the peripheral nervous system about the folds in the bodyor in an environment. However, this is not the only spinal function. It is involved in the dictation of some motor reflexes or involuntary muscle movements in response to a specific stimulus.
based on the spinal cord are the spinal cord, the main component of the peripheral nervous system. The paired nerve system is a total of 31 pairs of spinal nerves, one pair based on both sides of the spine for each vertebral segment, and each of them branched into smaller nerves that achieve all areas of the body. These parts of the nervous system carry three types of signals between the body and the brain: engine, sensory and autonomous. Motor signals travel from the brain to the muscle of the bodies, the sensory signals come from the receptors in the body and bring information about external stimuli to the brain as temperature and pain, and autonomous signals keep communicating with the brain about whether all body systems work properly. Are transmitted along the chains of individual nerve cells called neurons, parts of the nervous system that physically carry these electrical impuLSY from the brain to the body and vice versa.