| OSAS is the most common sleep breathing disorders. Now more and more researchers pay attention to it .Its characteristics are repeated attacks of complete or incomplete obstruction of upper airway in sleeping associated with intermittent hypoxemia or hypercapnia and constitutional disturbance of sleep. It may lead to cardiac, pulmonary and cerebral vascular disorders as well as multiorgan dysfunctrion. Even threatens one's life. So it is very important to make clear the mechanism of the disease. We know that OSAS is caused by the obstruction of upper airway.The most common position is at the retrotongue-base-pharynx level(genioglossus level). which has great connection with OSAS. Genioglossus is dominated by hypoglossus, Raphe Nucleus sends out nerve fibers to nucleus nervi hypoglossi, thus regulate respiratory activity .HB(Havenular nucleus) suppresses the activity of Raphe Nucleus .So it contributes to the regulation of OSAS .Insular cortex is the random regulation center of breathing. but the regulation center within the brain cortex isn't identical among different animals.So it is very important to find out the special position within the cortex which... |