What is the function of the vagus nerve?
The human body has 12 pairs of skull nerves connecting the main body systems directly with the brain, and each pair of nerves serves a specific function. One of them is the vagus nerve and its purpose is to innervate the organs of the body known together as viscera. Specifically, the function of vagus nerve is portable signals between the brain and various body systems that regulate heart rate, speech, sweating, blood pressure, digestion, glucose production and certain aspects of breathing. Not only the nerve is responsible for inheriting organs, but also controls certain skeletal muscles such as the larynx.
The cranial nerve x, as is also the known vagus nerve, serves as a communication path between the brain and viscera. Output from brain and inputs from different organ systems travel along different never fibers that make up this nerve, so that the state of different organs is the primary function of the nerve. Up to 90% of the nervous ribbon associated with the cranial nerve x are sensory or afferent nerves that pass information back to the brain.
Another name for the vagus nerve is the pneumogastric nerve, because of its responsibility for innervate stomach and lungs. In addition, the autonomous or involuntary lung function is controlled by nerve fibers and branches associated with the vagus nerve. The sensory and motor functions of the stomach are also checked; For example, when eating, this nerve is transferred to the brain to the brain. The digestive enzymes are produced and released according to its entry.
parasympathetic fibers, sensory tissues in the body of the body between the neck to the lower trunk are against sympathetic fibers that help to regulate various body functions. For example, the nerves vagus supply parasympathetic fibers for the heart, among other organs. Need should arise, the nerve secretes neurotransmitters responsible for reducing heart rate or lowering blood pressure through these fibers. Similarly similar fibers act to open the larynx during breathing and move different muscles in the mouth to allow speech.
Many otherThe systems rely on the proper functioning of the vagus nerve to communicate the needs of the brain. Its responsibility is the innervation of the channel of the outer ear. In addition, glucose production is reduced when the liver sends some information about insulin and enzyme along the vagan fibers to the brain. Other functions include feelings of taste transmission, controlling muscles responsible for swallowing and coughing, and lowering sweat glands that help regulate body temperature.