**Vegetative plexuses** The connective tissue of different organs is formed by different types of tissues, which are called **tissues of the internal environment**. Some of them are **fibrous connective tissues**, from which bundles inside organs and interorgan septa are formed. Others are **tight intercellular junctions, cell matrix and internal fluids.**
Each human organ is surrounded and penetrated by a network of nerves and blood vessels. Nerves in the area of the heart transmit impulses to it and relax or tighten its contractions. The veins and arteries located around the organ carry blood throughout the body, and air flows through the trachea, providing respiratory function. *Each branch that extends from these important organs is called **vegetative
The problem of psycho-emotional stress at the beginning of the school year worries parents and students; It's no secret that for many first and second graders, the school year is a real test. On the eve of Knowledge Day, we talk about autonomic plexuses and symptoms that arise during the school day.
The autonomic nervous system is the youngest among the departments of the central nervous system; in origin, it appeared in the embryo simultaneously with skeletal muscles. Subsequently, the autonomic nervous system developed relatively autonomously and in ontogenesis matures later than other parts of the central nervous system. It takes part in the regulation of all processes occurring in the human body.\n\nAutonomic plexuses (plexusautonomici) are terminal