What controls the nerves of the vagus?

Vagus nerve, which leads from the branch trunk to the organs of the chest and abdomen, sends and receives messages to control the functioning of the digestive system, heart, lungs and some glands. The longest nerve in the skull has several branches that affect many organs. Sensory receptors pass vital information through this nerve from organs and ear to the brain. Nerve pulses from the contractions of the muscle of the brain in digestive organs, lungs and hearts as part of the autonomic nervous system. This nerve is also called cranial nerve x because it is a tenth of 12 pairs of skull nerves. First, it is stimulated by the aroma, eyes and taste of food when it enters the mouth. This will release stomach acids and digestive juices. Nerve branches affect swallowing, while others control peristalsis, contraction of muscles in the digestive system that move food. Waste excretion is affected by branches of nerve that achieve the large intestine and kidneys.

heart rate and blood pressure are affected by this nerve. Within the parasympathetic nervous system, its effects should reduce heart and blood pressure. In the lungs of the vagus, the nerve acts to limit the bronchi by causing smooth muscles. The branch of the nerve controls the muscles that move voice folds inside the larynx, and damage can cause hoarse or other voice changes.

Stimulation of vagal nerves (VNS) is a treatment that has been approved in some countries for epileptic seizures. The implant sends electrical impulses to the brain with this nerve. Patients with epilepsy who feel upcoming seizures can activate the system in an effort to prevent it from happening. Although only a small percentage of patients are not experiencing any other seizures, vagal non -threshing rises reduces seizure frequency in approximately two -thirds of people using it. Research shows that treatment may be useful in patients suffering from depression who do not respond to medicines as well as in the treatment of heart failure.

At the time of extreme stress, the vagus nerve may be excessively activated. This causes heart rate and blood pressure to drop so much that sufficient blood is interrupted into the brain. The result is a vasovagal syncope - or fainting - caused by sudden stimulation of the nerve. The affected person will feel hot, nausea and confused before losing consciousness. Many things except stress can cause vasovagal syncope, including the remaining stationary for a long time, vision of blood or medical procedures or too quickly.