Vagus Nerve Nucleus Posterior

The Posterior Vagus Nucleus (n. Dorsalis Nervi Vagi, PNA), also known as the “posterior vagus nerve,” is one of the many vagal nuclei located in the medulla oblongata. It is responsible for the parasympathetic innervation of internal organs such as the stomach, intestines, bladder and others.

The nucleus of the posterior vagus nerve is located in the medulla oblongata and projects to the bottom of the rhomboid fossa, where it is located in the region of the triangle of the vagus nerve (or Wood's triangle). The nucleus contains multipolar cells that transmit nerve impulses to various organs. The axons of these cells form efferent fibers, which form the parasympathetic nerve fiber.

Parasympathetic innervation provided by the Posterior Vagus nerve influences the activity of internal organs and regulates their functions, such as the secretion of gastric juice, intestinal motility, bladder contraction and other processes. Disruption of the vagus nerve can lead to various diseases of the gastrointestinal tract, urinary tract and other body systems.

Thus, the nucleus of the Posterior Vagus Nerve is an important element of the parasympathetic nervous system and plays an important role in regulating the activity of internal organs. Its dysfunction can lead to serious illnesses, so it is necessary to pay attention to its functioning and keep it healthy.

The posterior vagus nucleus is one of the key elements of the body's autonomic nervous system. Its main function is the regulation of parasympathetic activity, which is responsible for maintaining the normal functioning of the internal organs and systems of the body. In this article we will look in more detail at what the anterior vagus nucleus is and how it works.