Autonomic Nervous System

Nervous System Autonomic: Regulator of internal organs

Our body is a complex system consisting of many organs and tissues that work together to support vital functions. The autonomic nervous system (Autonomic Nervous System) plays an important role in coordinating and regulating the activity of internal organs, such as the heart, lungs, liver, kidneys, intestines, glands and others.

The main function of the autonomic nervous system is to maintain homeostasis, that is, the constancy of the internal environment of the body. This is achieved due to the fact that the autonomic nervous system regulates various processes within the body, such as blood pressure, body temperature, blood glucose levels, sweat production and others.

The autonomic nervous system is divided into two main parts: sympathetic and parasympathetic. The sympathetic nervous system is activated in states of stress and tension, when you need to increase your energy levels and prepare for fight or flight. The parasympathetic nervous system, on the contrary, is activated in states of relaxation and rest, when you need to reduce your activity level and restore strength.

Both parts of the autonomic nervous system work together to ensure the proper functioning of organs and tissues. Sympathetic and parasympathetic nerve endings release different neurotransmitters, such as norepinephrine and acetylcholine, which act on different receptors and have different effects on the body.

The centers of the sympathetic part are located in the lateral horns of the VIII cervical, all thoracic and 1-11 lumbar segments of the spinal cord. The centers of the parasympathetic part are located in the midbrain and medulla oblongata and in the II-V sacral segments of the spinal cord.

The autonomic nervous system plays a critical role in regulating our body and maintaining its vital functions. Understanding how it works and how it affects the body helps us better understand ourselves and our physiology.

System Nervous Autonomic

The nervous system is one of the most important systems in the human body. It is responsible for controlling all body functions, including breathing, heartbeat, digestion, blood circulation and other processes. One part of the nervous system is the autonomic nervous system, which is responsible for regulating the functioning of internal organs.

The autonomic nervous system is a part of the nervous system that coordinates and regulates the activity of internal organs, such as the heart, intestines, sweating, salivation, metabolism and functional activity of tissues. The main function of the autonomic system is to maintain a constant internal environment of the body, homeostasis.

There are two types of autonomic nerve fibers – sympathetic and parasympathetic fibers. The sympathetic nervous system is located in the lateral horns of the spinal cord of the VIII cervical and all thoracic and 1-11 lumbar segments. The parasympathetic system is located in the midbrain and medulla oblongata, as well as the II-V lumbar segments of the spinal cord. Both types of fibers innervate the heart, smooth muscle, and most glands.

The interaction between sympathetic and parasympathetic fibers leads to opposite effects on the functioning of these organs. For example, sympathetic activity increases the heart rate and dilates blood vessels, while parasympathetic activity slows the heart rate, dilates blood vessels and causes the secretion of digestive juices.

Thus, the autonomic nervous system plays an important role in regulating the functioning of internal organs and maintaining homeostasis in the body.