System Nervous Parasympathetic

The parasympathetic nervous system (PNS) is one of the two main systems for regulating body functions. It is responsible for restoring and maintaining homeostasis, as well as adapting to changes in the external environment.

The SNS consists of parasympathetic nerve fibers that arise from the brain and spinal cord and innervate various organs and tissues. These fibers have a smaller diameter compared to the sympathetic nerves and are less active.

The main functions of the SNP include:

– Regulation of homeostasis: SNP regulates metabolism, body temperature, blood pressure, heart rate and other parameters necessary to maintain health.
– Adaptation to change: SNP allows the body to adapt to changes in the environment, such as changes in diet, physical activity or stress.
– Regeneration and restoration: SNP promotes the regeneration of damaged tissues and restoration of organ functions.

Unlike the sympathetic nervous system, the SNS is not responsible for mobilizing the body's resources to cope with stress or other extreme conditions. Instead, it helps the body restore balance and prepare for new conditions.

Thus, the SNP is an important system for regulating body functions and adapting to changes in the external environment. Its study can help in understanding the mechanisms of regulation of functions and in the development of new methods for treating various diseases.

The Parasympathetic Nervous System is an important part of the nervous system, often called the "dormant system" due to its low activity. But this system plays an important role in the regulation of many processes in the body, including the normal functioning of the cardiovascular, digestive, immune and endocrine systems.

*Description*

The parasympathetic nervous system consists of two main nerve ganglia: the sacral and upper cervical ganglia, located in the abdominal and thoracic cavities, respectively. The sacral ganglion has three segments corresponding to the three parts of the intestine (small intestine, colon, rectum), and the cervical ganglion has segments related to vision, hearing, stomach, lungs, respiratory tract and heart.

The Parampathetic Nervous System has two types of nerve fibers: postganglionic nerve fibers, which pass through the brain or spinal cord and then exit through the ganglia, and preganglionic fibers, which continue as